system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
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
assistant
The correct answer is  ectopic increase in ACTH is not suppressed by high dose of dexamethasone ( Harrison 17 pg 2256 )