<prompt> The diagnostic procedure not done in case of pheochromocytoma.CT scanMRIFNACMIBGscan  <response>: 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. -HarrisonCatastrophic 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. - 