英语语法分析

Objective:To explore the etiology and treatment of cholecystolithiasis combined with cholecystocolonic fistula or cholecystoduodenal fistula.

前言： 目的：探讨胆囊结石合并胆囊结肠瘘或胆囊十二指肠瘘的原因及腹腔镜手术治疗。