To the Editor. —We herein report successful laparoscopic adrenalectomy in two patients with primary aldosteronism. In April 1992, a 60-year-old man with a history of hypertension had a blood pressure of 180/100 mm Hg. His potassium level was 2.9 mmol/L, and he had a high aldosterone level of 1800 pmol/L and a low renin level of 0.2778 ng·L-1·s-1. Computed tomography of the abdomen showed a 1-cm mass of the left adrenal gland. His blood pressure was well controlled with verapamil and spironolactone. He underwent a 4.5-hour laparoscopic adrenalectomy on September 28, 1992, with no operative complications. He tolerated a regular diet at 24 hours. After antihypertensive medications were discontinued, his blood pressure was normal, and he was discharged on postoperative day 2. A 61-year-old woman had a history of mild hypertension since August 1978, which was well controlled with antihypertensive medications. In November 1989, she had a