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Rapid-onset obesity, hypothalamic dysfunction, hypoventilation, and autonomic dysregulation syndrome - neuro-endocrine tumours (ROHHAD-NET): case series and learning points.
Journal of Pediatric Endocrinology & Metabolism : JPEM 2023 January 26
OBJECTIVES: Rapid-onset obesity with hypoventilation, hypothalamic dysfunction, autonomic dysregulation (ROHHAD) is a rare syndrome associated with high morbidity and mortality. Diagnosis is often challenging. We describe three cases of ROHHAD with heterogeneous presentations but some consistent clinical features, including hyperprolactinaemia at diagnosis. We highlight when the diagnosis of ROHHAD should be considered at an early stage.
CASE PRESENTATION: All three patients presented between 4 and 6 years old with rapid-onset obesity. They all have central hypoventilation requiring nocturnal BiPAP, varying degrees of hypothalamic dysfunction with hyperprolactinaemia being a consistent feature, and autonomic dysfunction. One patient has a neuro-endocrine tumour (NET) and two have glucose dysregulation.
CONCLUSIONS: High prolactin was a consistent early feature. Central hypoventilation and NET may present later and therefore regular sleep studies and screening for NETs are required. A high suspicion of ROHHAD is warranted in patients with rapid, early-onset obesity and hyperprolactinaemia without structural pituitary abnormality.
CASE PRESENTATION: All three patients presented between 4 and 6 years old with rapid-onset obesity. They all have central hypoventilation requiring nocturnal BiPAP, varying degrees of hypothalamic dysfunction with hyperprolactinaemia being a consistent feature, and autonomic dysfunction. One patient has a neuro-endocrine tumour (NET) and two have glucose dysregulation.
CONCLUSIONS: High prolactin was a consistent early feature. Central hypoventilation and NET may present later and therefore regular sleep studies and screening for NETs are required. A high suspicion of ROHHAD is warranted in patients with rapid, early-onset obesity and hyperprolactinaemia without structural pituitary abnormality.
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