Among 65 aneurysms of anterior Willis loop in 62 patients, 62 aneurysms were clipped successfully, and 1 fusiform shaped aneurysm was wrapped. Two patients died before surgery and lost the opportunity for clipping aneurysms.

• 62例65个Willis环前部动脉瘤中,手术成功夹闭62个,包裹1个梭形动脉瘤,2例手术前死亡,失去夹闭机会。