ESPE Abstracts

Objective: To describe six cases of possible partial ectopic posterior pituitary gland (PEPP) seen on head magnetic resonance imaging (MRI) and their associated clinical and endocrinological manifestations.Methods: This is a single-center case series, from a tertiary public university health center in Montreal, Canada. Cases of children with possible PEPP were selected prospectively from 2005 to 2017, based on head MRI findings. Medical history, exam fi...

Background: Familial central diabetes insipidus (DI), usually an autosomal dominant disorder, is caused by mutations in arginine vasopressin–neurophysin II (AVP-NPII) gene that leads to aberrant preprohormone processing and gradual destruction of AVP-secreting cells.Objective and hypotheses: To determine clinical and molecular characteristics of patients with familial central DI from two different families.Method: The diagnosi...

Background: Periventricular nodular heterotopia (PNH) is a brain malformation caused by dysregulation of neuronal migration during cerebral development, resulting in nodular neuronal structures in the ventricular surface. Associated ectopy of the posterior pituitary has been reported in literature and is usually associated with deficiencies of the anterior pituitary. The occasion of an isolated central diabetes insipidus due to absence of the posterior pituita...

Introduction: Paediatric brain tumours in the sellar-suprasellar region (SSR) are often associated with central diabetes insipidus (CDI), either at diagnosis caused by the tumour itself or during follow-up as consequence of treatments.Aims: To define the timing of CDI onset and radiological features on brain MRI in our cohort.Methods: We retrospectively analysed paediatric patients...

Background: Leptin receptor (LepR) deficiency is an autosomal-recessive rare condition causing early-onset severe obesity, hyperphagia, hypogonadotropic hypogonadism (HH), hypothyroidism, and/or growth hormone deficiency (GHD). Cohen syndrome is a variable autosomal recessive genetic disease caused by mutations in the VPS13B gene causing central obesity, characteristic facial features, hypotonia, non-progressive intellectual deficit, neutropenia,...

Objectives: Pediatric obesity (PO) leads in adulthood to chronic high-risk pathologies, if not adequately identified and addressed. The anthropometric methods for evaluating PO have well-described limits. One of the most recently proposed indexes to better locate and evaluate PO is the neck circumference (NC). We have verified the relationship between NC, body mass index (BMI), waist circumference (WC) and some laboratory parameters, with the aim of defining t...

Background: Pituicytoma is a very low-grade glioma that originate in the neurohypophisis and infundibulum.Objective and hypotheses: Describe diagnosis and treatment of associated pituicytoma and ACTH-secreting adenoma in a 6-year-old girl.Method: Case report and literature review.Results: We report the case of a 6-year-old presented with growth failure and associated weight gain, premature pubarche, and hyper...

Background: Kallmann syndrome is the most common form of hypogonadotropic hypogonadism and is associated with genes such as KAL1, KAL2, CHD7, NELF, PROK2, and PROKR2. Genetic factors in hypopituitarism are involved with the gene mutation of PROP1, POU1F1, HESX1, LHX3, LHX4, and PTX2. We found a novel mutation of the AVP gene in a Kallmann syndrome patient with hypopituitarism.Case presentation: The pa...

Background: Pathologic mutations in RAI1 gene (typically microdeletions) cause SMS. Patients have characteristic physical appearance, developmental delay, sleep disturbances, and obesity; without hypothalamic dysfunction. Thaker et al published a case of a child with clinical diagnosis of ROHHAD with a mutation in the RAI1 gene (c.3265C>T: p.R1089X) found by whole exome sequencing. He had a physical appearance consistent with SMS and sleep cycle di...

Introduction: The coronavirus disease 19 (COVID19) pandemic urged to develop new vaccines to reduce the morbidity and mortality associated with this disease. Recognition and report of potential adverse effects of these novel vaccines (especially the urgent and life-threatening ones) is therefore essential.Case Presentation: A 16-year-old boy presented to the Paediatric Emergency Department with polyuria (9 liters per day...