A 61-Year-Old Man with Widespread Hyperpigmentation

A 61-Year-Old Man with Widespread Hyperpigmentation

A 61-year-old man presents with generalised weakness and skin hyperpigmentation. His only past medical history of note is a bilateral adrenalectomy for Cushing’s syndrome 18 years earlier. On examination of his visual fields you discover a bitemporal hemianopia. 1....