This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Surgery
[{'content': 'Incidentaly findings, in CT scan, a 3cm adrenal mass, which of the following is not done \nSelect and explain. \nA. Adrenalectomy, B. Dexamethasone suppression test, C. Measurement of catecholamines, D. 24-hour urinary coisol excretion', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref: Bailey&;s 26thE pg 779 Hormonal evaluation in Incidentaloma includes: morning and midnight plasma coisol measurements; a 1-mg overnight dexamethasone suppression test; 24-hour urinary coisol excretion; 12 or 24-hour urinary excretion of metanephrines or plasmafree metanephrines; serum potassium, plasma aldosterone and plasma renin activity; serum DHEAS, testosterone or 17-hydroxyestradiol (virilising or feminising tumour).', 'role': 'assistant'}]