回顾性分析1例乙状结肠癌伴肠膀胱瘘(EVF)患者的临床资料,探讨EVF的病因、分类、CT表现。结果表明:EVF的症状可以同时开始于泌尿系和胃肠道,肿瘤引起的EVF预后不良,手术切除对EVF具有较好的临床效果。CT检查在EVF诊断中起重要作用,EVF常见的CT表现为膀胱内积气、局部膀胱壁增厚、膀胱外肿块。 Retrospective analysis of 1 case of sigmoid colon with intestinal fistula (EVF) in patients with clinical data to explore the etiology, classification, CT manifestations of EVF. The results showed that: the symptoms of EVF can start in the urinary tract and gastrointestinal tract at the same time, the prognosis of EVF caused by tumor is not good, and surgical resection has good clinical effect on EVF. CT examination plays an important role in the diagnosis of EVF. Common CT findings of EVF are intravesical gas accumulation, thickening of the local bladder wall, and extracranial masses.