患者女,70岁。因阵发性腹胀腹痛4周,加重伴停止排气、排便1周,以肠梗阻于2004年1月29日入院。入院查体:明显腹胀,未见胃肠形及蠕动波。腹软,下腹轻度压痛,未及明确肿物,听诊可闻及气过水声,肠鸣音活跃(10次／min),肛门指诊未触及肿物。立位腹部平片:左下腹及右中腹可见阶梯状液平,结肠胀气。结肠镜提示:乙状结肠肠腔 Female patient, 70 years old. Due to paroxysmal abdominal distension abdominal pain for 4 weeks, increased with stop bleeding, defecation for 1 week to intestinal obstruction in January 29, 2004 admission. Admission examination: obvious abdominal distension, no gastrointestinal and peristaltic waves. Abdomen soft, mild abdominal tenderness, and a clear tumor, auscultation can be heard and gas over the water, bowel sounds active (10 beats / min), anus did not touch the palpation of finger. Standing abdominal plain film: the left lower quadrant and the right middle abdomen can be seen ladder-like fluid flatulence flatulence. Colonoscopy Tip: sigmoid colon lumen