Endocrine Abstracts

A 43 year old man presented following a seizure. Past history included cranial irradiation 18 years ago for nasopharyngeal carcinoma (NPC). Blood pressure was 100/66 with a postural drop. Examination revealed a bilateral sixth nerve palsy. The only biochemical abnormality on admission was a serum sodium of 117 millimoles per litre. A cranial CT scan was normal.Further investigation included thyroid stimulating hormone of 3.92 milliunits per litre, a free T4 of 4 picomoles ...