This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Anatomy
[{'content': 'Most common cause of Cushing syndrome \nSelect and explain. \nA. Pituitary adenoma, B. Adrenal adenoma, C. Exogenous steroids, D. Ectopic ACTH', 'role': 'user'}, {'content': "Answer: C \nExplanation: Reference Robbins page no Pg 1125 What are the symptoms of Cushing's syndrome? weight gain. thin arms and legs. a round face. increased fat around the base of the neck. a fatty hump between the shoulders. easy bruising. wide purple stretch marks, mainly on the abdomen, breasts, hips, and under the arms. weak muscles", 'role': 'assistant'}]