Endocrine Abstracts

A 59-year-old Caucasian heterosexual man presented with malaise and dizziness. General examination revealed no peripheral oedema, no clubbing or lymphadenopathy and systemic examination was otherwise normal. His initial investigations showed hyponatremia with serum sodium 121 mmol/l, potassium 3.4 mmol/, serum osmolality 255 mOsml/kg, and urine osmolality 672 mOsml/kg. The rest of blood tests including; thyroid function, short Synacthen test, full blood count, liver functions,...