This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrine System, Subject name: Radiology
[{'content': 'The diagnostic procedure not done in case of pheochromocytoma. \nSelect and explain. \nA. CT scan, B. MRI, C. FNAC, D. MIBGscan', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e. FNAC 1551 "Percutaneous fine-needle aspiration of chromaffin tumors is contraindicated; indeed, pheochromocytoma should be considered before adrenal lesions are aspirated." -Harrison"Catastrophic hypertensive crisis and fatal cardiac arrhythmias can occur spontaneously or may be triggered by intravenous contrast dye or glucagon injection, needle biopsy of the mass, anesthesia, and surgical procedures." -', 'role': 'assistant'}]