The investigator conduct a randomized clinical trial for the needlescopic and conventional laparoscopic adrenalectomy to assess whether mini laparoscopic adrenalectomy is better than conventional laparoscopic adrenalectomy in terms of pain, complication rate , and wound cosmetics
Over the age of 20 years old.
Primary aldosteronism with unilateral adrenal lesions smaller than 4 cm
Indications for laparoscopic surgery.
Informed consent
Over 80 years old
Suspected adrenal malignancy or pheochromocytoma
Other concurrent surgery
Patients who underwent bilateral adrenal tumor resection at the same time