A 7-year-old boy with central diabetes insipidus presenting with thickened pituitary stalk and anti-rabphilin-3A antibody positivity
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Kazutaka Morota
Abstract
Objectives
A highly invasive pathological diagnosis is necessary to differentiate central diabetes insipidus (CDI) with a thickened pituitary stalk. Lymphocytic infundibulo-hypophysitis (LIH) due to autoimmune involvement of the pituitary stalk is a differentiating disease, and anti-rabphilin-3A antibody (Rab3A-Ab) positivity was recently reported.
Case presentation
A 7-year-old boy was diagnosed with CDI after having polyuria for two months. He showed growth hormone deficiency with reduced growth rate. Brain magnetic resonance imaging (MRI) revealed a thickened pituitary stalk. The placental alkaline phosphatase level of the cerebrospinal fluid, tumor marker for germ cell tumors, was below the level of sensitivity. No skin or bone findings suggestive of Langerhans cell histiocytosis were detected. Eight months after CDI onset, Rab3A-Ab was positive, and MRI showed shrinking of the thickened pituitary stalk, leading to the diagnosis with LIH.
Conclusions
Rab3A-Ab is a useful adjunctive diagnostic tool for childhood-onset LIH.
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Research funding: None declared.
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Author contributions: K.N. and K.M. wrote the original draft and reviewed and revised the manuscript. H.T., S.S., and K.W. collected the data and reviewed the manuscript. Y.S. measured the rabphilin-3A antibody and reviewed and revised the manuscript. All authors approved the final manuscript as submitted and agree to be accountable for all aspects of the work.
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Competing interests: Authors state no conflict of interest.
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Informed consent: Written consent was obtained from our patient’s parents to present the details of his medical case and any accompanying images.
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Ethical approval: This study was approved by the Institutional Ethics Review Board Committee of Nagaoka Red Cross Hospital (Niigata, Japan), approval number 210716.
References
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
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- Homozygous missense variant of PTH (c.166C>T, p.(Arg56Cys)) as the cause of familial isolated hypoparathyroidism in a three-year-old child
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Articles in the same Issue
- Frontmatter
- Review Article
- Impact of Obesity on Bone Metabolism in Children
- Mini Review
- Late sequelae of drug reaction with eosinophilia and systemic symptoms (DRESS) cause thyroid dysfunction and thyroiditis: review of literature
- Original Articles
- Moderating effect of bone maturation on the relationship between body fat and insulin resistance
- Prevalence of nephropathy in Indian children and youth with type 1 diabetes mellitus
- Initial neutrophil/lymphocyte and lymphocyte/monocyte ratios can predict future insulin need in newly diagnosed type 1 diabetes mellitus
- Subcutaneous adipose tissue is a positive predictor for bone mineral density in prepubertal children with Prader–Willi syndrome independent of lean mass
- The attitudes, experiences, and self-competencies of pediatric endocrinology fellows and attending physicians regarding diabetes technology: the Turkey experience
- Adiposity measures in screening for metabolic syndrome among Chinese children and adolescents
- Increased anxiety symptoms in pediatric type 1 diabetes during the acute phase of COVID-19 lockdown
- Pediatric adrenal insufficiency: thirty years experience at a Portuguese hospital
- Spectrum of PAH gene mutations and genotype–phenotype correlation in patients with phenylalanine hydroxylase deficiency from Turkey
- Serum spexin levels are not associated with size at birth but are associated with metabolic syndrome components in prepubertal children born at term
- Familial early-onset obesity in Turkish children: variants and polymorphisms in the melanocortin-4 receptor (MC4R) gene
- An update of the mutation spectrum of phenylalanine hydroxylase (PAH) gene in the population of Turkey
- Primary hypertriglyceridemia induced pancreatitis in a cohort of Pakistani children
- Investigation of the relationship between serum sclerostin and dickkopf-1 protein levels with bone turnover in children and adolescents with type-1 diabetes mellitus
- Case Reports
- Diagnostic value of plasma lysosphingolipids levels in a Niemann–Pick disease type C patient with transient neonatal cholestasis
- A 7-year-old boy with central diabetes insipidus presenting with thickened pituitary stalk and anti-rabphilin-3A antibody positivity
- Homozygous missense variant of PTH (c.166C>T, p.(Arg56Cys)) as the cause of familial isolated hypoparathyroidism in a three-year-old child
- Long-term follow-up of transient neonatal diabetes mellitus due to a novel homozygous c.7734C>T (p.R228C) mutation in ZFP57 gene: relapse at prepubertal age
