Woman 50 yo, hypertension on medical treatment, well controlled, one week ago she was getting very weak and falling down to brain trauma. CT scan the head has nothing, but blood test showed hypokalemia K = 1.7 mEq /ml, abnormal EKG with wave T= U deformation. Ultrasound scan of abdomen detected one 2cm small tumor at right adrenal area. MSCT with CE showed this tumor in high enhancement (HU= 8.2 rising to 59.9). Blood tests from adrenal gland hormones were normal, aldosterone dynamic test was=84 pg/mL, after test 115pg/mL. This case was operated by endoscopy for removing this tumor. See macro and microscopic specimen and report is adenoma of cortical adrenal gland.