Lalloo, 50 years old, a chronic smoker, presents with history of hemoptysis. He was having truncal obesity and hypeension. He had an elevated ACTH level which was not suppressive with high dose dexamethasone. What would be the most probable diagnosis
ectopic increase in ACTH is not suppressed by high dose of dexamethasone ( Harrison 17 pg 2256 )
Bilateral adrenal hyperplasia
Adrenal adenoma
Pituitary tumour
Ectopic| ACTH producing lung cancer
Endocrinology