<prompt> Incidental finding in CT scan, a 3 cm adrenal mass, which of the following is not done?AdrenalectomyDexamethasone suppression testMeasurement of catecholaminesMidnight plasma coisol  <response>: Nonoperative therapy, with close periodic follow-up, is advised for lesions 4 cm in diameter with benign imaging characteristics, whereas adrenalectomy is recommended for lesions 4 cm in size due to the increased risk of cancer. 