Methods:Forty patients with chronic calculus cholecystitis and polypus of cholecyst randomly diveded into two groups,and treated each group with MLC and LC respectively.

• 方法:随机将慢性结石性胆囊炎和胆囊息肉40例分成两组,分别施行二孔微型腹腔镜胆囊切除术(MLC)和三孔腹腔镜胆囊切除术(LC)。