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Giant borderline ovarian tumours – review of the literature

  • Pawel Sadlecki EMAIL logo , Katarzyna Dejewska , Patrycja Domieracka and Malgorzata Walentowicz-Sadlecka
Published/Copyright: August 19, 2025

Abstract

Introduction

Giant borderline ovarian tumours (GBOTs) are rare neoplasms that require meticulous management to prevent high-risk operative complications. The broader goal of this systematic review is to consolidate the existing knowledge on GBOTs by focusing on diagnostic approaches, differential diagnoses, and treatment strategies. Furthermore, the relationship between the clinical features of GBOTs and the types of diagnostic and therapeutic procedures implemented was determined.

Materials and methods

The publications were analysed for the following data: histopathological type of GBOT; patient’s age; dimensions, weight, and/or volume of the tumour; levels and types of tumour markers determined; types of imaging tests performed; type of treatment applied.

Results

Twenty-one articles describing the clinical situation of 22 patients met the inclusion criteria for the systematic review. The mean age of the patients included in the analysis was 46.68 years (SD: 19.1 years); the youngest patient was 12, and the oldest was 76 years of age. In the analysed literature, patients most often (81.8%) had the mucinous type of GBOT. In the vast majority of cases (86.36%), based on the analysed literature, the surgical treatment method for the patients was laparotomy. In more than half of the patients (54.55%), the uterus was removed during surgical treatment. In the analysed literature, the hysterectomy procedure was not performed in patients under 40 years of age. Based on the analysed literature, it was found that if the CA 125 concentration in the blood serum of patients with mucosal tumours exceeded 40 U/mL, laparoscopy was not performed and the patients were treated using an open approach.

Conclusions

GBOTs are rare neoplasms that require meticulous management to prevent high-risk operative complications. Despite the diagnostic and therapeutic challenges posed by the large size and potential complications of these tumours, with proper medical care, patients can achieve successful outcomes and a good prognosis.

1 Introduction

In an era of growing popularity of minimally invasive techniques in surgical gynaecology, giant borderline ovarian tumours (GBOTs) remain a niche in which classical surgical skills will undoubtedly remain essential. GBOTs are defined as ovarian masses of at least 20 cm in diameter. These tumours are relatively rare in the existing medical literature and present with a wide range of clinical manifestations [1]. BOTs typically occur in women who are about a decade younger than those diagnosed with epithelial ovarian cancer, with the majority of cases (approximately 75%) being detected at an early stage, particularly stage I, according to the International Federation of Gynaecology and Obstetrics (FIGO) [2]. GBOTs are characterised by slow growth and carry the potential to transform into malignant ovarian tumours [3]. Their large size and associated complications present unique diagnostic and therapeutic challenges, although advancements in imaging and healthcare have made the occurrence of such massive tumours increasingly rare [4]. The symptoms of GBOTs are similar to those of other ovarian tumours, including abdominal pain, bloating, and irregular menstrual cycles. Additionally, compressive symptoms or a visible abdominal mass is commonly observed [2]. Due to their size, these tumours can cause significant discomfort and hinder daily activities. The primary diagnostic tools are imaging techniques such as ultrasound (USG), computed tomography (CT), or magnetic resonance imaging (MRI). Diagnostics also include the evaluation of tumour markers. Surgical treatment generally consists of laparotomy with varying extents of organ removal, depending on the individual case [1].

The aim of this systematic review is to compile and evaluate the current knowledge on GBOTs, with particular focus on diagnostic methods, differential diagnosis, and treatment strategies. We emphasise the importance of preoperative assessment and a critical evaluation of surgical options. Although open laparotomy has traditionally been the standard approach – especially given the massive size of these tumours – minimally invasive techniques may be considered in a few carefully selected cases. Consequently, this review explores both the evolving role of laparoscopy and other minimally invasive methods, as well as the full range of surgical interventions available for managing large ovarian masses.

2 Materials and methods

This systematic review was conducted in accordance with the international standards and guidelines for systematic reviews (PRISMA – Preferred Reporting Items for Systematic Reviews and Meta-Analyses). The PRISMA 2020 checklist was applied in this study. A detailed review protocol is available from the author upon request. The review included publications from databases such as PubMed, Google Scholar, Scopus, and EBM Reviews (including the Cochrane Database of Systematic Reviews), covering articles published between 2000 and 2024. To increase precision, we incorporated Boolean operators (AND/OR) into our search strategy and used a targeted combination of keywords – “giant and borderline,” “borderline malignancy,” “ovarian tumour,” and “ovarian cyst” – to identify eligible studies. To ensure transparency and minimise selection bias, study selection, data extraction, and quality assessment were conducted independently by two reviewers; any disagreements were resolved through discussion and voting on disputed articles. If, following discussion, the reviewers reached unanimous agreement, the publication was included in the analysis. Searches were conducted on August 11, 2024. The Newcastle–Ottawa Scale was implemented to assess the quality of the included studies. The review was limited to publications in English or Polish and excluded repeated items and articles without full-text availability. The inclusion of publications in English and Polish was justified by the authors’ proficiency in these languages, which allowed for a thorough analysis of the content. The initial analysis primarily included peer-reviewed case reports, observational studies, and retrospective analyses. A secondary search entailed examining the reference lists of all the included articles. Certain publication types, such as editorials, comments, conference abstracts, abstracts, validation studies, and animal studies, were excluded from the analysis. Studies were excluded from the review if the diagnosis was other than a borderline tumour; the tumour size was less than 19 cm, weighed less than 1,000 g, or had a volume less than 500 mL; or the clinical data or results of the pathological examination were not reported. The inclusion and exclusion criteria for this study are summarised in Table 1, and a flow diagram illustrating the study selection process is presented in Figure 1. The publications were analysed for the following data: histopathological type of GBOT; patient’s age; dimensions, weight, and/or volume of the tumour; levels and types of tumour markers determined; types of imaging tests performed; and type of treatment applied.

Table 1

Inclusion and exclusion criteria for the study

Inclusion criteria
Type of study Peer-reviewed: Case reports, case series, and observational studies
Years 2000–2024
Language English and Polish
Subject of study Live humans
Clinical criteria Borderline ovarian tumour (pathologically confirmed) and reported clinical data
Exclusion criteria
Type of study Editorials, comments, conference abstracts, abstracts, book chapters, and validation studies
Language Other than English and Polish
Subject of study Animals and autopsy
Clinical criteria Size <20 cm or weight <1,000 g or volume <500 mL, not reported: Clinical data or pathological confirmation
Figure 1 
               Flow diagram of the study selection process.
Figure 1

Flow diagram of the study selection process.

Statistical analyses were performed using the PQStat statistical package version 1.8.4.152. The scale results were compared using the Mann–Whitney U test, and a logistic regression model was also estimated. A test probability of p < 0.05 was considered significant, while a value of p < 0.01 was considered highly significant.

3 Results

After the first search of the databases (PubMed, Google Scholar, Scopus, and EBM Reviews, which included the Cochrane Database of Systematic Reviews) for the given keywords, 121 items were obtained. Duplicates were then excluded, leaving 50 publications. After the analysis of the abstracts of the selected publications, 32 items qualified for further analysis. Due to the lack of criteria allowing for qualification for the systematic review, another 11 publications were eliminated. Finally, 21 articles describing the clinical situation of 22 patients met the inclusion criteria for the systematic review. The clinical data obtained from the publications included in the systematic review are summarised in Table 2.

Table 2

Clinical data obtained from publications included in the systematic review (BOT – borderline ovarian tumour, HA – abdominal hysterectomy, TLH – total laparoscopic hysterectomy, BSO – bilateral salpingo-oophorectomy, USO – unilateral salpingo-oophorectomy, CT – computed tomography, MRI – magnetic resonance imaging, USG – ultrasound examination, CA 125 – cancer antigen 125, CA 19-9 – cancer antigen 19-9, CEA – carcinoembryonic antigen, AFP – α-fetoprotein, ß-hCG – ß-human chorionic gonadotropin, and ND – no data)

Author No. of BOT CASES Histological type of BOT Max. dimensions/weight/volume Age Symptoms Tumour markers Diagnostics Surgical treatment
1 Mikos T 1 Mucinous/serous 35 l 59 Dyspnoea abdominal distension CA 125, 300 U/mL USG and CT Laparotomy and HA + BSO
2 Iwasaki M 1 Mucinous 21 × 15.5 × 7 cm/1,120 g 13 Abdominal pain, abdominal distension, abdominal girth, and fever CA 125, 184.0 U/mL; CA 19-9, 330.0 U/mL USG and CT Laparotomy, USO, and appendectomy
3 Cîrstoiu MM 1 Mucinous 59 × 48 × 32 cm/30 kg 44 Abdominal pain, abdominal distension, constipation, and early satiety CA 125, CA 19-9, CEA, and AFP – normal values USG and CT Laparotomy and HA + BSO
4 Lee HM 1 Mucinous 19 × 15 × 8.5 cm/1,584 g 13 Abdominal distension CA 125, 284 U/mL; CA 19-9, 2,581 U/mL PET/CT Laparotomy, unilateral USO, appendectomy, and omentectomy
5 Dougherty D 1 Mucinous/Brenner 40 × 22 × 27 cm 57 Abdominal discomfort CA 125, 249.4 U/mL; CEA, 6.1 ng/mL CT Laparotomy and HA + BSO
6 Pilone V 1 Mucinous 60 × 50 × 40 cm/6,500 g (solid part) 69 Abdominal distension CA 125, CEA, AFP, and CA 19-9 – normal values CT Laparotomy, HA + BSO, and partial omentectomy
7 Watanabe S 1 Mucinous 42 × 22 × 20 cm/11,800 g 12 Abdominal distention and abdominal girth CA 125, 96.3 U/mL; CEA, 117.5 ng/mL; AFP, 0.7 ng/mL; CA 19-9, 5029.0 U/mL; ß-hCG <0.003 units/mL USG, MRI, and X-ray Laparotomy and USO
8 Yazawa H 1 Endometrioid 27 × 9 cm 41 Abdominal/back pain CA 125, 150 U/mL; CA 19‐9, 220 IU/mL MRI Laparoscopy, TLH + BSO, partial omentectomy, and pelvic lymph node biopsy
9 Mulita F 1 Mucinous 44 × 39 × 19 cm/15.4 kg 59 Abdominal distention, dyspnoea, and difficulty in ambulation CA 19-9, >953 U/mL ND Laparotomy, HA + BSO, omentectomy, and appendectomy
10 Mitragkas P 2 1. Mucinous; 2. mucinous 1. 23.5 × 11 × 23.6 cm; 2. 24,7 cm 1. 45; 2. 54 1. Constipation and early satiety; 2. Abdominal bloating and epigastrium pain 1. All tumour markers were in normal range; 2. All tumour markers were in normal range 1. USG and CT; 2. USG 1. Laparotomy and USO; 2. Laparoscopy, TLH + BSO, and omentectomy
11 Deo A 1 Mucinous 36 × 30 × 18 cm/32.5 kg 76 Massive ascites and breathlessness (NYHA III), abdominal distension, abdominal pain, weight loss, and constipation CA 125, 53 U/mL; CA 19-9, 1,000 U/mL; CEA; ß-HCG; AFP – normal USG and CT Laparotomy – HA + BSO, biopsy (vaginal cuff, peritoneum, and omentum)
12 Halani D 1 Mucinous 35 × 40 × 32 cm/24 kg 53 Abdominal pain CA 125, 53.2 IU/mL; CA 19-9, 1,000 U/mL CT Laparotomy and HA + BSO
13 Yazawa R 1 Mucinous >20 cm 26 ND CA 125, 55.7 U/mL; CA 19-9, 177 U/mL; CEA, 16.6 ng/mL CT and MRI Laparotomy, USO, and appendectomy
14 Peiretti M 1 Mucinous 47 × 36 × 33 cm 52 Abdominal distention, reflux, early satiety, constipation, difficulty in ambulation, and dyspnoea CA 125, 33 U/mL; CEA, 0.97 ng/mL; CA 19-9, 19.2 U/mL; AFP, 1.1 ng/mL USG and CT Laparotomy, HA + BSO, intraoperative controlled drainage appendectomy, and abdominal wall reconstruction
15 Gharbia N 1 Mucinous 27 × 12 × 26 cm 30 Abdominal pain and abdominal girth over the past fever CA 125, 493 U/mL; CA 19-9, 273 U/mL USG and MRI Laparotomy, USO, omentectomy, and appendectomy
16 Onuzo CN 1 Mucinous 50 cm 24 Abdominal discomfort CA 125, 54.3 U/mL USG and MRI Laparotomy and USO
17 Bogliatto F 1 Mucinous 34 cm 60 Abdominal pain CA 125, CEA, AFP, and CA 19-9 – normal levels USG and CT Laparoscopy, intraoperative controlled drainage, and BSO
18 Stukan M 1 Mucinous 50 × 45 × 26 cm 49 ND CA 125, 140.4 U/mL CT Laparotomy and HA + BSO
19 Berbecar VT 1 Mucinous 19 × 19 × 31 cm 59 Abdominal discomfort ND USG and CT Laparotomy and USO
20 Rigo F 1 Serous 26 × 33 × 20 cm/10 kg 69 Abdominal distension CEA, 5.2 ng/mL; CA 19-9, 103 IU/mL; AFP, 0.8 IU/mL CT Laparotomy, HA + BSO, and appendectomy
21 Pence S 1 Mucinous 35 × 25 × 35 cm 63 Septic shock ND ND Laparotomy, BSO, and reparation of peptic ulcers

The mean age of the patients included in the analysis was 46.68 years (SD 19.1 years); the youngest patient was 12 years of age, and the oldest was 76 years of age. In the analysed literature, patients most often (81.8%) had the mucinous type of GBOT. Moreover, patients up to 40 years of age had only the mucinous type of BOT. The tumours were analysed in terms of the largest dimension; the mean value was 36.16 cm, and the median was 35 cm. Half of the tumours were in the range of 27–44 cm, while the total range of results was 19–60 cm. The relationship between the maximum tumour size and age was examined, but no statistically significant relationship was found. In the analysed publications, the average tumour weight was 14,767 g, and the median was 11,800 g; the lightest tumour weighed was 1,120 g, and the heaviest was 32,500 g. All tumours in the cases analysed were limited to a single ovary. The average CA 125 level in the blood was 126.9 U/mL, with a median of 55 U/mL, and values ranged from 25 to 493 U/mL. We also looked at how CA 125 is related to age and found a nearly significant pattern (p = 0.0546): we observed a trend toward higher average and median CA 125 levels in patients  ≤40 years (p  =  0.0546) (Table 3). Based on the analysed literature, it was found that if the CA 125 concentration in the blood serum of patients with mucinous borderline tumours exceeded 40 U/mL, laparoscopy was not performed, and the patients were treated using an open approach. In the vast majority of cases (86.36%), based on the analysed literature, the surgical treatment method for the patients was laparotomy. In more than half of the patients (54.55%), the uterus was removed during surgical treatment. In the analysed literature, the hysterectomy procedure was not performed in patients under 40 years of age.

Table 3

Relationship between the CA 125 concentration in blood serum and age; a relationship close to statistical significance was found (p = 0.0546) (SD – standard deviation, Q1 – first quartile, and Q3 – third quartile)

CA 125 (U/mL)
≤40 (years) >40 (years)
Mean 194.55 93.0833
SD 170.7556 95.8221
Median 140.15 43
Minimum 54.3 25
Maximum 493 300
Q1 65.85 29.5
Q3 259 142.8
Mann–Whitney U test Z 1.9220
p 0.0546

The relationship between age and the decision to perform hysterectomy was also examined, and in older patients, hysterectomy was statistically significantly more often performed (p = 0.0375) (Table 4 and Figure 2). The logistic regression model for the prediction of hysterectomy by age indicated a significant effect of age, as the odds ratio was 1.0923, with a 95% confidence interval from 1.0127 to 1.1781 (p = 0.0222). This means that each additional year of age was associated with a higher probability of undergoing hysterectomy, confirming a statistically significant effect of age (Figure 3). In five instances, fertility-sparing treatment was chosen due to the patient’s age. Appendectomy was performed in seven cases. The reviewed literature mostly did not report the duration of surgery or intraoperative blood loss.

Table 4

Age in the group of the patients with and without hysterectomy

Age (years)
Without hysterectomy With hysterectomy
Mean 34.5 56.8333
SD 20.5656 10.4258
Median 28 55.5
Minimum 12 41
Maximum 63 76
Q1 15.75 51.25
Q3 55.5 61.5
Mann–Whitney U test Z 2.0806
p 0.0375

(SD – standard deviation, Q1 – first quartile, and Q3 – third quartile).

Figure 2 
               Relationship between age and the decision to perform hysterectomy. In older patients, hysterectomy was statistically significantly more often performed (p = 0.0375).
Figure 2

Relationship between age and the decision to perform hysterectomy. In older patients, hysterectomy was statistically significantly more often performed (p = 0.0375).

Figure 3 
               Logistic regression model of the prediction of hysterectomy by age indicates a significant effect of age, as the odds ratio is 1.0923 with a 95% confidence interval from 1.0127 to 1.1781 (p = 0.0222).
Figure 3

Logistic regression model of the prediction of hysterectomy by age indicates a significant effect of age, as the odds ratio is 1.0923 with a 95% confidence interval from 1.0127 to 1.1781 (p = 0.0222).

The relationship between the maximum tumour size and the decision to perform hysterectomy was also examined, and patients with larger tumours were statistically significantly more likely to undergo hysterectomy (p = 0.0344) (Table 5 and Figure 4). The logistic regression model for the prediction of hysterectomy based on the maximum tumour size did not indicate a significant effect of tumour size; however, the results were close to statistical significance, as the odds ratio was 1.1019, with a 95% confidence interval of 0.9987–1.2157 (p = 0.0530) (Figure 5).

Table 5

Maximum tumour size in the group of patients with and without hysterectomy

Maximum tumour size (cm)
Without hysterectomy With hysterectomy
Mean 30.36 41.4273
SD 10.0977 11.8181
Median 29 40
Minimum 19 24.7
Maximum 50 60
Q1 21.65 34
Q3 34.75 48.5
Mann–Whitney U test Z 2.1153
p 0.0344

(SD – standard deviation, Q1 – first quartile, and Q3 – third quartile).

Figure 4 
               Relationship between the maximum tumour size and the decision to perform hysterectomy. Patients with larger tumours were statistically significantly more likely to undergo hysterectomy (p = 0.0344).
Figure 4

Relationship between the maximum tumour size and the decision to perform hysterectomy. Patients with larger tumours were statistically significantly more likely to undergo hysterectomy (p = 0.0344).

Figure 5 
               Logistic regression model for the prediction of hysterectomy based on the maximum tumour size does not indicate a significant effect of tumour size; however, the results are close to statistical significance as the odds ratio is 1.1019 with a 95% confidence interval of 0.9987 to 1.2157 (p = 0.0530).
Figure 5

Logistic regression model for the prediction of hysterectomy based on the maximum tumour size does not indicate a significant effect of tumour size; however, the results are close to statistical significance as the odds ratio is 1.1019 with a 95% confidence interval of 0.9987 to 1.2157 (p = 0.0530).

Given the limited sample and borderline statistical significance for key predictors, our logistic regression findings should be interpreted as exploratory. They highlight potential associations worthy of further study but require confirmation in larger, more robust datasets.

4 Discussion

In this review, we found that GBOTs were primarily unilateral and mucinous in nature and most often managed via laparotomy. Elevated CA 125 levels were more commonly seen in patients aged 40 or younger, while the likelihood of hysterectomy increased significantly in older women and those with larger tumours. Fertility-sparing surgeries were employed relatively infrequently. Below, we present the key findings from our review in the context of selected literature sources.

Advancements in imaging technologies and the routine implementation of screenings have greatly enhanced the early detection of ovarian masses, as they have allowed for the identification of these tumours, while they are still asymptomatic and relatively small [5]. However, in rare cases, ovarian masses may remain undetected and grow significantly, often due to limitations of transvaginal USG, patient obesity, or restricted access to medical care. There is currently no universally accepted definition for categorising large or giant ovarian tumours; generally, a GBOT is defined as an ovarian mass with a diameter of at least 20 cm (Figure 6) [6].

Figure 6 
               GBOT is defined as an ovarian mass with a diameter of at least 20 cm. Operative field view: A midline incision from the pubic symphysis to the xiphoid process, allowing for the safe exteriorisation of a giant ovarian tumour.
Figure 6

GBOT is defined as an ovarian mass with a diameter of at least 20 cm. Operative field view: A midline incision from the pubic symphysis to the xiphoid process, allowing for the safe exteriorisation of a giant ovarian tumour.

Mucinous tumours are typically unilateral, with bilateral cases occurring in only about 5% of the instances [7]. In the literature we analysed, all tumours were located in one of the ovaries, their average maximum dimension was 35 cm, and in terms of histopathology, the dominant type was mucinous. Ovarian cystic masses containing more than 10% borderline architecture are classified as BOTs; among these, mucinous BOTs (mBOTs) account for 45% of the cases [8]. Mucinous cystadenomas can grow into large masses and often remain undiagnosed until they reach giant sizes, typically being incidentally discovered during routine physical examinations or sonograms. Mucinous tumours are classified as benign (75%), borderline (10%), or malignant (15%); if left untreated, these tumours have the potential to progress into invasive mucinous carcinoma [1,9,10].

Based on our literature analysis, the most frequently reported symptoms in GBOTs include bloating, abdominal distension, fatigue, urinary symptoms, and pelvic or abdominal discomfort [11]. Gastrointestinal manifestations – such as abdominal pain, pressure, flatulence, and even constipation or diarrhoea – were also commonly documented, along with shortness of breath, particularly upon lying down or moving [12,13].

Diagnostics of GBOTs relies on a combination of clinical examination and advanced imaging modalities. Physical and pelvic examination may initially raise suspicion when a large adnexal mass is palpated, but definitive characterisation necessitates imaging. Transvaginal and abdominal USG serve as first-line tools: it excels at assessing lesion morphology, cystic versus solid components, septations, and distinguishing masses from ascites, thanks to its accessibility. However, its diagnostic accuracy is moderate – sensitivity around 77% and specificity roughly 83% for differentiating BOTs from benign lesions [14,15,16,17,18,19] – and limited by depth penetration in cases of giant masses. Consequently, computed tomography (CT) and magnetic resonance imaging (MRI) are recommended as supplementary modalities for comprehensive preoperative evaluation. CT provides valuable insights into tumour size, solid component characteristics, and potential metastases or lymphadenopathy and can aid in distinguishing BOTs from invasive epithelial ovarian cancers by analysing specific radiologic features such as small solid areas [15]. MRI offers superior soft-tissue contrast, enabling the detection of subtle intra-cystic nodules and papillary projections typical of borderline pathology, with MRI sensitivity and specificity reaching approximately 85 and 74%, respectively. In rare cases of GBOT, MRI and CT accurately define the lesion extent and adjacent structure involvement, guiding surgical planning [9,20].

When a GBOT is suspected, additional diagnostic tests, including tumour marker evaluations, are often conducted to assess the potential for malignancy. Suspicion of malignancy is primarily based on radiological findings and elevated levels of tumour markers, such as CA 125, human epididymis protein 4 (HE4), cancer antigen 19-9 (CA 19-9), carcinoembryonic antigen (CEA), ß-human chorionic gonadotropin (ß-hCG), α-fetoprotein (AFP), and lactate dehydrogenase [21,22]. The marker that is particularly important for distinguishing mucinous from serous tumours is CA 19-9. In some of the analysed studies, it was measured, and the levels reported in the publications were high; unfortunately, not all articles provided specific values. Another important marker for distinguishing benign from malignant lesions is HE4. When used alongside CA 125 in the risk of ovarian malignancy algorithm, it achieves a sensitivity of approximately 92% and a specificity around 75% in differentiating benign and malignant conditions [16]. In the literature we reviewed on GBOTs, HE4 was not routinely used. CA 125 is widely utilised to differentiate between malignant and benign pelvic masses, particularly in postmenopausal patients, where serum CA 125 levels above 200 U/mL have a 96% positive predictive value for malignancy [23]. However, in premenopausal patients, the specificity of CA 125 is lower due to its elevation in various benign conditions, such as endometriosis, and physiological changes in concentration during the menstrual cycle. In the publications concerning GBOTs included in our analysis, various tumour markers were used to expand preoperative diagnostics. CA 125 was measured in a majority of studies; therefore, we focused on it in our further analysis. We found a relationship close to statistical significance in patients under 40 years of age, as their CA 125 concentrations were higher compared to those in patients over 40 years. In the literature we analysed, no significant correlation between the tumour size and CA 125 levels was observed [11]. CA 125 also has a sensitivity of 50% for early-stage epithelial ovarian cancer. However, HE4 has demonstrated greater sensitivity than CA 125 in distinguishing benign from malignant conditions, making it a more effective biomarker in some cases [24]. Despite these diagnostic tools, the possibility of malignancy or borderline malignancy often remains uncertain until a final pathological diagnosis is made. In the literature we analysed, patients with mBOTs whose serum CA 125 concentrations exceeded the normal values were not qualified for surgery using minimally invasive techniques. Near-significant p-values must be interpreted with caution: in small samples, even moderate effect sizes may yield non-significant results, and conversely chance findings can appear significant. These small, heterogeneous samples greatly limit the external validity of findings and heighten concerns about publication bias, where positive or unusual cases are disproportionately published.

The differential diagnosis for giant ovarian cysts is extensive and covers both benign and malignant conditions of gynaecologic and non-gynaecologic origins. These can include a distended bladder, hydronephrosis, ascites, accentuated obesity, pregnancy, fibroids, and various intra-abdominal and adnexal masses [25,26,27]. Based on the cases we reviewed, the differential diagnosis commonly included benign and malignant lesions, non-epithelial tumours, and free fluid in the peritoneal cavity [28,29,30].

The management of GBOTs depends on several factors, including the patient’s age, menopausal status, fertility desires, nutritional status, access to medical facilities, and the surgeon’s expertise. Tumour size is a critical factor in determining clinical management, with surgical intervention often recommended for tumours larger than 10 cm, particularly when they cause symptoms. In cases where the tumour is particularly large, a staged surgical approach may be necessary. However, the significance of tumour size as a predictor of malignancy in ovarian tumours is still debated.

An examination of the pathological extent of BOTs is essential for appropriate intraoperative decision-making. In such cases, intraoperative frozen section analysis can help differentiate borderline tumours from invasive carcinomas, guiding the extent of surgical resection and fertility-sparing decisions. Although frozen section has moderate accuracy, sampling errors may occur, especially in large or heterogeneous tumours. Therefore, representative sampling of multiple tumour areas is crucial to minimize misdiagnosis [31]. Ultimately, integrating frozen section findings with careful gross inspection and preoperative imaging improves the likelihood of appropriate management of GBOTs.

The basic method of treating a patient with a GBOT is surgical treatment by laparotomy. This method allows for oncologically safe dissection of the tumour and its removal from the patient’s peritoneal cavity. Surgical treatment is determined based on the clinical stage of the tumour and the fertility plans of the patient. In patients with tumours confined to the ovary, corresponding to FIGO stage I, two surgical options are possible: hysterectomy with bilateral salpingo-oophorectomy can be performed if preservation of fertility is not a problem. However, if the patient wishes to preserve fertility, unilateral salpingo-oophorectomy can also be performed, leaving the ovary and uterus intact [2]. Uterine-sparing surgery in BOT patients is associated with a higher risk of recurrence, though studies show it does not increase the risk of death due to disease or death from any cause. Therefore, while uterine preservation may be considered to maintain fertility or avoid more complex surgery, women must be advised that it carries a greater likelihood of recurrence without compromising long-term survival [32]. A bilateral ovarian tumour, especially in women of childbearing age who wish to preserve fertility, presents a significant surgical challenge. In such cases, a successful two-step approach has been described in the literature, enabling accurate diagnosis of bilateral BOTs with peritoneal implants, fertility-sparing surgery, and preoperative oocyte retrieval with cryopreservation before cytoreductive intervention [33]. In the reviewed literature, more than half of the patients with GBOT underwent hysterectomy during surgery, a procedure significantly more common in those over 40 years of age and in cases with larger tumours. Moreover, hysterectomy was not performed in patients under 40 years of age.

A critical aspect of surgical treatment for malignant tumours and BOTs is ensuring complete removal of the lesion while avoiding rupture of the tumour capsule during surgery. Intraoperative rupture can lead to the intraperitoneal spread of tumour contents, which can increase the risk of disease progression and recurrence [34]. For open surgeries, it is crucial to make a sufficiently large incision and carefully free the lesion from adhesions. Adequate staging of BOTs requires meticulous inspection of the peritoneum and multiple peritoneal biopsies, while appendectomy – even in mucinous subtypes – is unnecessary unless the appendix appears macroscopically abnormal [35]. There is no supporting evidence for routine lymph node dissection in BOTs, and omission of comprehensive staging is linked to higher recurrence rates, though complete staging has not clearly demonstrated an overall survival benefit for FIGO stage I disease [36]. As hysterectomy appears to not impact survival outcomes of women with BOT, it might be avoided in the surgical staging [37].

Restaging surgery may only be justified for patients at elevated risk – such as those with serous tumours showing micropapillary features or when initial abdominal and pelvic exploration was incomplete – due to the associated morbidity and uncertain benefit. Complete removal of all visible peritoneal implants is essential both for accurate staging and therapeutic management of serous borderline ovarian tumours (sBOTs), particularly in cases exhibiting peritoneal disease, as routine lymphadenectomy has not demonstrated survival benefits in stage II/III sBOTs [36]. Fertility-sparing surgery in patients with peritoneal implants carries a higher risk of recurrence compared to stage I cases, but this elevated risk stems from the initial peritoneal spread rather than ovarian preservation itself [36].

Although laparotomy remains the predominant approach, emerging evidence supports a cautious expansion of minimally invasive techniques – especially laparoscopy – for large adnexal masses. In minimally invasive procedures, the tumour should be placed in a bag and removed through a small incision while maintaining oncological sterility [38]. Even large lesions up to 30 cm can be removed minimally invasively in a safe and effective manner. However, a cautious technique is essential: protected cyst aspiration and the use of specimen bags have been shown to significantly reduce the risk of tumour rupture during laparoscopy [39]. Similarly, five recent cases of giant cysts were managed via single-port laparoscopy with protective retrieval bags, achieving safe outcomes and excellent cosmetic results [40]. These evolving approaches – bag extraction, staged aspiration, and single-port methods – suggest that laparoscopy may be a feasible option in highly selected cases. That said, careful patient selection, meticulous technique, and oncologic safeguards remain paramount until larger prospective studies confirm the safety and long-term outcomes. An innovative approach, described by Kakinuma et al., involves the use of cyanoacrylate glue to secure the tumour within a sterile bag under laparoscopic guidance before extracting it through a small abdominal incision. This technique is particularly useful when malignancy cannot be ruled out and facilitates the removal of large tumours. However, its oncological safety in cases of BOTs would need to be confirmed through large randomised studies [41]. A similar scope of surgery in postmenopausal patients was performed in the publications we analysed. In the case of premenopausal patients, removal of the tumour alone or adnexa with the tumour was much more common. We also found that in the vast majority of cases, the decision was made to perform surgery by means of classic laparotomy with a midline incision; only in two cases it was decided to initiate treatment with minimally invasive techniques, which still required minilaparotomy to extract the tumour [42,43]. Moreover diagnostic laparoscopy – often combined with imaging (MRI, positron emission tomography [PET]-CT, and CT) and biomarkers like CA 125 and HE4 – has demonstrated high accuracy (up to 90%), with strong negative predictive value in ruling out unresectable disease and randomised trials, confirming its utility in optimising patient selection [42,43]. By enhancing preoperative assessment of intra- and extra-abdominal tumour burden, laparoscopy supports more personalised surgical planning and may safely guide decisions between primary debulking and neoadjuvant approaches [44].

The literature highlights the risk of complications in patients with giant ovarian tumours, which include life-threatening events, such as pulmonary and cardiac failure, pulmonary embolism, and sepsis [45]. These risks are heightened due to the challenges of managing massive ovarian tumours, which can cause severe hypotension, increased venous return, cardiac failure, respiratory complications, and intestinal distension. Postoperative complications often arise due to rapid changes in body circulation, including the development of pulmonary oedema [46]. One specific concern is hypotension syndrome, which is caused by the compression of large blood vessels when the patient is in a supine position; this condition can lead to sudden drops in intrathoracic and intracavitary pressure, resulting in haemodynamic disturbances. To mitigate these risks, a slow intraoperative drainage rate of 0.5–1 L/min and positioning the patient in a lateral decubitus position, rather than supine, is recommended to avoid vena cava compression and reduce the risk of cardiac arrest. In most cases reviewed in the literature, there were no intraoperative or early postoperative complications, which highlight the effectiveness of careful perioperative management. Implementation of Enhanced Recovery After Surgery (ERAS) protocols may significantly reduce the physiological stress of extensive laparotomy for ovarian tumours by promoting early feeding, mobilisation, and optimised pain control, thereby maintaining patients’ normal physiological state [47]. In patients undergoing open cytoreductive surgery for advanced ovarian masses, ERAS implementation has been associated with fewer postoperative complications and lower rates of Intensive Care Unit admission [48].

Ultimately, we found that the complexity of treating giant ovarian tumours necessitates a multidisciplinary approach, which is crucial for providing optimal patient care [49]. This approach involves collaboration among a medical oncologist, gynaecologic oncologist, radiologist, pathologist, and other specialists to develop personalised care plans. Multidisciplinary team meetings and continuous discussions of patient cases are thus essential for accurate diagnosis and determining the most effective treatment options [50,51]. The prognosis for patients with GBOTs varies based on factors such as tumour size and stage, patient age and overall health, and the success of treatment. FIGO classification is particularly important in determining the prognosis, guiding treatment decisions, and assessing outcomes [52,53].

5 Limitations of the study

The analysis is based on a small group of patients drawn from 21 studies, mostly of case reports and small observational studies with diverse designs and populations. Such small, heterogeneous samples severely limit the generalisability of findings, and raise concerns about publication bias – where positive or unusual cases are more likely to be reported. Although trends such as higher CA 125 levels in younger patients and an increased likelihood of hysterectomy with greater age or tumour size are intriguing, definitive conclusions require larger, prospective studies with standardised data collection protocols. An additional factor contributing to discrepancies may have been the limitation to publications in English and Polish, given that the authors were able to perform an in-depth analysis of their content.

6 Conclusions

GBOTs are rare neoplasms that require meticulous management to prevent high-risk operative complications. Despite the diagnostic and therapeutic challenges posed by the large size and potential complications of these tumours, with proper medical care, patients can achieve successful outcomes and good prognosis.

Abbreviations

AFP

α-fetoprotein

BOTs

borderline ovarian tumours

BSO

bilateral salpingo-oophorectomy

CA 125

cancer antigen 125

CA 19-9

cancer antigen 19-9

CEA

carcinoembryonic antigen

CT

computed tomography

CT

computed tomography

FIGO

International Federation of Gynaecology and Obstetrics

GBOTs

giant borderline ovarian tumours

HA

abdominal hysterectomy

LDH

lactate dehydrogenase

mBOT

mucinous borderline ovarian tumour

MRI

magnetic resonance imaging

MRI

magnetic resonance imaging

PET

positron emission tomography

PRISMA

Preferred Reporting Items for Systematic Reviews and Meta-Analyses

sBOT

serous borderline ovarian tumour

ß-HCG

ß-human chorionic gonadotropin

TLH

total laparoscopic hysterectomy

USG

ultrasound

USO

unilateral salpingo-oophorectomy


tel: +48 693529294

  1. Funding information: The authors declare that no funds, grants, or other support was received.

  2. Author contributions: PS: conceived and designed the analysis, collected the data, and wrote the article. KD: collected the data and wrote the article. PD: collected the data and wrote the article. MWS: contributed data and designed the analysis.

  3. Conflict of interest: PS serves as an editor in Open Medicine, but it did not influence the peer-review process of the article.

  4. Data availability statement: The data supporting the findings of this study are available from the corresponding author upon reasonable request.

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Received: 2025-01-29
Revised: 2025-07-05
Accepted: 2025-07-22
Published Online: 2025-08-19

© 2025 the author(s), published by De Gruyter

This work is licensed under the Creative Commons Attribution 4.0 International License.

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  39. Tetrahydropalmatine improves mitochondrial function in vascular smooth muscle cells of atherosclerosis in vitro by inhibiting Ras homolog gene family A/Rho-associated protein kinase-1 signaling pathway
  40. A cross-sectional study: Relationship between serum oxidative stress levels and arteriovenous fistula maturation in maintenance dialysis patients
  41. A comparative analysis of the impact of repeated administration of flavan 3-ol on brown, subcutaneous, and visceral adipose tissue
  42. Identifying early screening factors for depression in middle-aged and older adults: A cohort study
  43. Perform tumor-specific survival analysis for Merkel cell carcinoma patients undergoing surgical resection based on the SEER database by constructing a nomogram chart
  44. Unveiling the role of CXCL10 in pancreatic cancer progression: A novel prognostic indicator
  45. High-dose preoperative intraperitoneal erythropoietin and intravenous methylprednisolone in acute traumatic spinal cord injuries following decompression surgeries
  46. RAB39B: A novel biomarker for acute myeloid leukemia identified via multi-omics and functional validation
  47. Impact of peripheral conditioning on reperfusion injury following primary percutaneous coronary intervention in diabetic and non-diabetic STEMI patients
  48. Clinical efficacy of azacitidine in the treatment of middle- and high-risk myelodysplastic syndrome in middle-aged and elderly patients: A retrospective study
  49. The effect of ambulatory blood pressure load on mitral regurgitation in continuous ambulatory peritoneal dialysis patients
  50. Expression and clinical significance of ITGA3 in breast cancer
  51. Single-nucleus RNA sequencing reveals ARHGAP28 expression of podocytes as a biomarker in human diabetic nephropathy
  52. rSIG combined with NLR in the prognostic assessment of patients with multiple injuries
  53. Toxic metals and metalloids in collagen supplements of fish and jellyfish origin: Risk assessment for daily intake
  54. Exploring causal relationship between 41 inflammatory cytokines and marginal zone lymphoma: A bidirectional Mendelian randomization study
  55. Gender beliefs and legitimization of dating violence in adolescents
  56. Effect of serum IL-6, CRP, and MMP-9 levels on the efficacy of modified preperitoneal Kugel repair in patients with inguinal hernia
  57. Effect of smoking and smoking cessation on hematological parameters in polycythemic patients
  58. Pathogen surveillance and risk factors for pulmonary infection in patients with lung cancer: A retrospective single-center study
  59. Necroptosis of hippocampal neurons in paclitaxel chemotherapy-induced cognitive impairment mediates microglial activation via TLR4/MyD88 signaling pathway
  60. Celastrol suppresses neovascularization in rat aortic vascular endothelial cells stimulated by inflammatory tenocytes via modulating the NLRP3 pathway
  61. Cord-lamina angle and foraminal diameter as key predictors of C5 palsy after anterior cervical decompression and fusion surgery
  62. GATA1: A key biomarker for predicting the prognosis of patients with diffuse large B-cell lymphoma
  63. Influencing factors of false lumen thrombosis in type B aortic dissection: A single-center retrospective study
  64. MZB1 regulates the immune microenvironment and inhibits ovarian cancer cell migration
  65. Integrating experimental and network pharmacology to explore the pharmacological mechanisms of Dioscin against glioblastoma
  66. Trends in research on preterm birth in twin pregnancy based on bibliometrics
  67. Four-week IgE/baseline IgE ratio combined with tryptase predicts clinical outcome in omalizumab-treated children with moderate-to-severe asthma
  68. Single-cell transcriptomic analysis identifies a stress response Schwann cell subtype
  69. Acute pancreatitis risk in the diagnosis and management of inflammatory bowel disease: A critical focus
  70. Effect of subclinical esketamine on NLRP3 and cognitive dysfunction in elderly ischemic stroke patients
  71. Interleukin-37 mediates the anti-oral tumor activity in oral cancer through STAT3
  72. CA199 and CEA expression levels, and minimally invasive postoperative prognosis analysis in esophageal squamous carcinoma patients
  73. Efficacy of a novel drainage catheter in the treatment of CSF leak after posterior spine surgery: A retrospective cohort study
  74. Comprehensive biomedicine assessment of Apteranthes tuberculata extracts: Phytochemical analysis and multifaceted pharmacological evaluation in animal models
  75. Relation of time in range to severity of coronary artery disease in patients with type 2 diabetes: A cross-sectional study
  76. Dopamine attenuates ethanol-induced neuronal apoptosis by stimulating electrical activity in the developing rat retina
  77. Correlation between albumin levels during the third trimester and the risk of postpartum levator ani muscle rupture
  78. Factors associated with maternal attention and distraction during breastfeeding and childcare: A cross-sectional study in the west of Iran
  79. Mechanisms of hesperetin in treating metabolic dysfunction-associated steatosis liver disease via network pharmacology and in vitro experiments
  80. The law on oncological oblivion in the Italian and European context: How to best uphold the cancer patients’ rights to privacy and self-determination?
  81. The prognostic value of the neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, and prognostic nutritional index for survival in patients with colorectal cancer
  82. Factors affecting the measurements of peripheral oxygen saturation values in healthy young adults
  83. Comparison and correlations between findings of hysteroscopy and vaginal color Doppler ultrasonography for detection of uterine abnormalities in patients with recurrent implantation failure
  84. The effects of different types of RAGT on balance function in stroke patients with low levels of independent walking in a convalescent rehabilitation hospital
  85. Causal relationship between asthma and ankylosing spondylitis: A bidirectional two-sample univariable and multivariable Mendelian randomization study
  86. Correlations of health literacy with individuals’ understanding and use of medications in Southern Taiwan
  87. Correlation of serum calprotectin with outcome of acute cerebral infarction
  88. Comparison of computed tomography and guided bronchoscopy in the diagnosis of pulmonary nodules: A systematic review and meta-analysis
  89. Curdione protects vascular endothelial cells and atherosclerosis via the regulation of DNMT1-mediated ERBB4 promoter methylation
  90. The identification of novel missense variant in ChAT gene in a patient with gestational diabetes denotes plausible genetic association
  91. Molecular genotyping of multi-system rare blood types in foreign blood donors based on DNA sequencing and its clinical significance
  92. Exploring the role of succinyl carnitine in the association between CD39⁺ CD4⁺ T cell and ulcerative colitis: A Mendelian randomization study
  93. Dexmedetomidine suppresses microglial activation in postoperative cognitive dysfunction via the mmu-miRNA-125/TRAF6 signaling axis
  94. Analysis of serum metabolomics in patients with different types of chronic heart failure
  95. Diagnostic value of hematological parameters in the early diagnosis of acute cholecystitis
  96. Pachymaran alleviates fat accumulation, hepatocyte degeneration, and injury in mice with nonalcoholic fatty liver disease
  97. Decrease in CD4 and CD8 lymphocytes are predictors of severe clinical picture and unfavorable outcome of the disease in patients with COVID-19
  98. METTL3 blocked the progression of diabetic retinopathy through m6A-modified SOX2
  99. The predictive significance of anti-RO-52 antibody in patients with interstitial pneumonia after treatment of malignant tumors
  100. Exploring cerebrospinal fluid metabolites, cognitive function, and brain atrophy: Insights from Mendelian randomization
  101. Development and validation of potential molecular subtypes and signatures of ocular sarcoidosis based on autophagy-related gene analysis
  102. Widespread venous thrombosis: Unveiling a complex case of Behçet’s disease with a literature perspective
  103. Uterine fibroid embolization: An analysis of clinical outcomes and impact on patients’ quality of life
  104. Discovery of lipid metabolism-related diagnostic biomarkers and construction of diagnostic model in steroid-induced osteonecrosis of femoral head
  105. Serum-derived exomiR-188-3p is a promising novel biomarker for early-stage ovarian cancer
  106. Enhancing chronic back pain management: A comparative study of ultrasound–MRI fusion guidance for paravertebral nerve block
  107. Peptide CCAT1-70aa promotes hepatocellular carcinoma proliferation and invasion via the MAPK/ERK pathway
  108. Electroacupuncture-induced reduction of myocardial ischemia–reperfusion injury via FTO-dependent m6A methylation modulation
  109. Hemorrhoids and cardiovascular disease: A bidirectional Mendelian randomization study
  110. Cell-free adipose extract inhibits hypertrophic scar formation through collagen remodeling and antiangiogenesis
  111. HALP score in Demodex blepharitis: A case–control study
  112. Assessment of SOX2 performance as a marker for circulating cancer stem-like cells (CCSCs) identification in advanced breast cancer patients using CytoTrack system
  113. Risk and prognosis for brain metastasis in primary metastatic cervical cancer patients: A population-based study
  114. Comparison of the two intestinal anastomosis methods in pediatric patients
  115. Factors influencing hematological toxicity and adverse effects of perioperative hyperthermic intraperitoneal vs intraperitoneal chemotherapy in gastrointestinal cancer
  116. Endotoxin tolerance inhibits NLRP3 inflammasome activation in macrophages of septic mice by restoring autophagic flux through TRIM26
  117. Lateral transperitoneal laparoscopic adrenalectomy: A single-centre experience of 21 procedures
  118. Petunidin attenuates lipopolysaccharide-induced retinal microglia inflammatory response in diabetic retinopathy by targeting OGT/NF-κB/LCN2 axis
  119. Procalcitonin and C-reactive protein as biomarkers for diagnosing and assessing the severity of acute cholecystitis
  120. Factors determining the number of sessions in successful extracorporeal shock wave lithotripsy patients
  121. Development of a nomogram for predicting cancer-specific survival in patients with renal pelvic cancer following surgery
  122. Inhibition of ATG7 promotes orthodontic tooth movement by regulating the RANKL/OPG ratio under compression force
  123. A machine learning-based prognostic model integrating mRNA stemness index, hypoxia, and glycolysis‑related biomarkers for colorectal cancer
  124. Glutathione attenuates sepsis-associated encephalopathy via dual modulation of NF-κB and PKA/CREB pathways
  125. FAHD1 prevents neuronal ferroptosis by modulating R-loop and the cGAS–STING pathway
  126. Association of placenta weight and morphology with term low birth weight: A case–control study
  127. Investigation of the pathogenic variants induced Sjogren’s syndrome in Turkish population
  128. Nucleotide metabolic abnormalities in post-COVID-19 condition and type 2 diabetes mellitus patients and their association with endocrine dysfunction
  129. TGF-β–Smad2/3 signaling in high-altitude pulmonary hypertension in rats: Role and mechanisms via macrophage M2 polarization
  130. Ultrasound-guided unilateral versus bilateral erector spinae plane block for postoperative analgesia of patients undergoing laparoscopic cholecystectomy
  131. Profiling gut microbiome dynamics in subacute thyroiditis: Implications for pathogenesis, diagnosis, and treatment
  132. Delta neutrophil index, CRP/albumin ratio, procalcitonin, immature granulocytes, and HALP score in acute appendicitis: Best performing biomarker?
  133. Anticancer activity mechanism of novelly synthesized and characterized benzofuran ring-linked 3-nitrophenyl chalcone derivative on colon cancer cells
  134. H2valdien3 arrests the cell cycle and induces apoptosis of gastric cancer
  135. Prognostic relevance of PRSS2 and its immune correlates in papillary thyroid carcinoma
  136. Association of SGLT2 inhibition with psychiatric disorders: A Mendelian randomization study
  137. Motivational interviewing for alcohol use reduction in Thai patients
  138. Luteolin alleviates oxygen-glucose deprivation/reoxygenation-induced neuron injury by regulating NLRP3/IL-1β signaling
  139. Polyphyllin II inhibits thyroid cancer cell growth by simultaneously inhibiting glycolysis and oxidative phosphorylation
  140. Relationship between the expression of copper death promoting factor SLC31A1 in papillary thyroid carcinoma and clinicopathological indicators and prognosis
  141. CSF2 polarized neutrophils and invaded renal cancer cells in vitro influence
  142. Proton pump inhibitors-induced thrombocytopenia: A systematic literature analysis of case reports
  143. The current status and influence factors of research ability among community nurses: A sequential qualitative–quantitative study
  144. OKAIN: A comprehensive oncology knowledge base for the interpretation of clinically actionable alterations
  145. The relationship between serum CA50, CA242, and SAA levels and clinical pathological characteristics and prognosis in patients with pancreatic cancer
  146. Identification and external validation of a prognostic signature based on hypoxia–glycolysis-related genes for kidney renal clear cell carcinoma
  147. Engineered RBC-derived nanovesicles functionalized with tumor-targeting ligands: A comparative study on breast cancer targeting efficiency and biocompatibility
  148. Relationship of resting echocardiography combined with serum micronutrients to the severity of low-gradient severe aortic stenosis
  149. Effect of vibration on pain during subcutaneous heparin injection: A randomized, single-blind, placebo-controlled trial
  150. The diagnostic performance of machine learning-based FFRCT for coronary artery disease: A meta-analysis
  151. Comparing biofeedback device vs diaphragmatic breathing for bloating relief: A randomized controlled trial
  152. Serum uric acid to albumin ratio and C-reactive protein as predictive biomarkers for chronic total occlusion and coronary collateral circulation quality
  153. Multiple organ scoring systems for predicting in-hospital mortality of sepsis patients in the intensive care unit
  154. Single-cell RNA sequencing data analysis of the inner ear in gentamicin-treated mice via intraperitoneal injection
  155. Review Articles
  156. The effects of enhanced external counter-pulsation on post-acute sequelae of COVID-19: A narrative review
  157. Diabetes-related cognitive impairment: Mechanisms, symptoms, and treatments
  158. Microscopic changes and gross morphology of placenta in women affected by gestational diabetes mellitus in dietary treatment: A systematic review
  159. Review of mechanisms and frontier applications in IL-17A-induced hypertension
  160. Research progress on the correlation between islet amyloid peptides and type 2 diabetes mellitus
  161. The safety and efficacy of BCG combined with mitomycin C compared with BCG monotherapy in patients with non-muscle-invasive bladder cancer: A systematic review and meta-analysis
  162. The application of augmented reality in robotic general surgery: A mini-review
  163. The effect of Greek mountain tea extract and wheat germ extract on peripheral blood flow and eicosanoid metabolism in mammals
  164. Neurogasobiology of migraine: Carbon monoxide, hydrogen sulfide, and nitric oxide as emerging pathophysiological trinacrium relevant to nociception regulation
  165. Plant polyphenols, terpenes, and terpenoids in oral health
  166. Laboratory medicine between technological innovation, rights safeguarding, and patient safety: A bioethical perspective
  167. End-of-life in cancer patients: Medicolegal implications and ethical challenges in Europe
  168. The maternal factors during pregnancy for intrauterine growth retardation: An umbrella review
  169. Intra-abdominal hypertension/abdominal compartment syndrome of pediatric patients in critical care settings
  170. PI3K/Akt pathway and neuroinflammation in sepsis-associated encephalopathy
  171. Screening of Group B Streptococcus in pregnancy: A systematic review for the laboratory detection
  172. Giant borderline ovarian tumours – review of the literature
  173. Leveraging artificial intelligence for collaborative care planning: Innovations and impacts in shared decision-making – A systematic review
  174. Cholera epidemiology analysis through the experience of the 1973 Naples epidemic
  175. Risk factors of frailty/sarcopenia in community older adults: Meta-analysis
  176. Supplement strategies for infertility in overweight women: Evidence and legal insights
  177. Scurvy, a not obsolete disorder: Clinical report in eight young children and literature review
  178. A meta-analysis of the effects of DBS on cognitive function in patients with advanced PD
  179. Protective role of selenium in sepsis: Mechanisms and potential therapeutic strategies
  180. Strategies for hyperkalemia management in dialysis patients: A systematic review
  181. C-reactive protein-to-albumin ratio in peripheral artery disease
  182. Case Reports
  183. Delayed graft function after renal transplantation
  184. Semaglutide treatment for type 2 diabetes in a patient with chronic myeloid leukemia: A case report and review of the literature
  185. Diverse electrophysiological demyelinating features in a late-onset glycogen storage disease type IIIa case
  186. Giant right atrial hemangioma presenting with ascites: A case report
  187. Laser excision of a large granular cell tumor of the vocal cord with subglottic extension: A case report
  188. EsoFLIP-assisted dilation for dysphagia in systemic sclerosis: Highlighting the role of multimodal esophageal evaluation
  189. Molecular hydrogen-rhodiola as an adjuvant therapy for ischemic stroke in internal carotid artery occlusion: A case report
  190. Coronary artery anomalies: A case of the “malignant” left coronary artery and its surgical management
  191. Rapid Communication
  192. Biological properties of valve materials using RGD and EC
  193. A single oral administration of flavanols enhances short-term memory in mice along with increased brain-derived neurotrophic factor
  194. Letter to the Editor
  195. Role of enhanced external counterpulsation in long COVID
  196. Expression of Concern
  197. Expression of concern “A ceRNA network mediated by LINC00475 in papillary thyroid carcinoma”
  198. Expression of concern “Notoginsenoside R1 alleviates spinal cord injury through the miR-301a/KLF7 axis to activate Wnt/β-catenin pathway”
  199. Expression of concern “circ_0020123 promotes cell proliferation and migration in lung adenocarcinoma via PDZD8”
  200. Corrigendum
  201. Corrigendum to “Empagliflozin improves aortic injury in obese mice by regulating fatty acid metabolism”
  202. Corrigendum to “Comparing the therapeutic efficacy of endoscopic minimally invasive surgery and traditional surgery for early-stage breast cancer: A meta-analysis”
  203. Corrigendum to “The progress of autoimmune hepatitis research and future challenges”
  204. Retraction
  205. Retraction of “miR-654-5p promotes gastric cancer progression via the GPRIN1/NF-κB pathway”
  206. Retraction of: “LncRNA CASC15 inhibition relieves renal fibrosis in diabetic nephropathy through downregulating SP-A by sponging to miR-424”
  207. Retraction of: “SCARA5 inhibits oral squamous cell carcinoma via inactivating the STAT3 and PI3K/AKT signaling pathways”
  208. Special Issue Advancements in oncology: bridging clinical and experimental research - Part II
  209. Unveiling novel biomarkers for platinum chemoresistance in ovarian cancer
  210. Lathyrol affects the expression of AR and PSA and inhibits the malignant behavior of RCC cells
  211. The era of increasing cancer survivorship: Trends in fertility preservation, medico-legal implications, and ethical challenges
  212. Bone scintigraphy and positron emission tomography in the early diagnosis of MRONJ
  213. Meta-analysis of clinical efficacy and safety of immunotherapy combined with chemotherapy in non-small cell lung cancer
  214. Special Issue Computational Intelligence Methodologies Meets Recurrent Cancers - Part IV
  215. Exploration of mRNA-modifying METTL3 oncogene as momentous prognostic biomarker responsible for colorectal cancer development
  216. Special Issue The evolving saga of RNAs from bench to bedside - Part III
  217. Interaction and verification of ferroptosis-related RNAs Rela and Stat3 in promoting sepsis-associated acute kidney injury
  218. The mRNA MOXD1: Link to oxidative stress and prognostic significance in gastric cancer
  219. Special Issue Exploring the biological mechanism of human diseases based on MultiOmics Technology - Part II
  220. Dynamic changes in lactate-related genes in microglia and their role in immune cell interactions after ischemic stroke
  221. A prognostic model correlated with fatty acid metabolism in Ewing’s sarcoma based on bioinformatics analysis
  222. Red cell distribution width predicts early kidney injury: A NHANES cross-sectional study
  223. Special Issue Diabetes mellitus: pathophysiology, complications & treatment
  224. Nutritional risk assessment and nutritional support in children with congenital diabetes during surgery
  225. Correlation of the differential expressions of RANK, RANKL, and OPG with obesity in the elderly population in Xinjiang
  226. A discussion on the application of fluorescence micro-optical sectioning tomography in the research of cognitive dysfunction in diabetes
  227. A review of brain research on T2DM-related cognitive dysfunction
  228. Metformin and estrogen modulation in LABC with T2DM: A 36-month randomized trial
  229. Special Issue Innovative Biomarker Discovery and Precision Medicine in Cancer Diagnostics
  230. CircASH1L-mediated tumor progression in triple-negative breast cancer: PI3K/AKT pathway mechanisms
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