Endocrine Abstracts

A 6 month boy with chronic vomiting and severe weight faltering (birth weight 50th to 75th centile dropped to 0.4th centile) originally attributed to gastro-oesophageal reflux was admitted after a period of poor urine output and found to have severe hypernatraemia (Na 168 mmol/l, K 4.1 mmol/l, Urea 16.2 mmol/l, Creatinine 54 umol/l) with high plasma osmolality (330 mosm/kg) and inappropriately low urine osmolality (130 mOsm/Kg). Renal USS was normal with slightly small kidneys...