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大肠癌无梗阻患者经完善的术前准备均能一期切除吻合,但大肠癌患者多伴有不全梗阻或完全梗阻,因肠管扩张、结肠壁薄、血供较差,结肠内容物多呈固态或半固态,含菌量多、菌种复杂,且以老年患者居多,各器官的并发症多,代偿功能低下,免疫功能减退,故一般认为其手术耐受性差,肿瘤一
Colorectal cancer without obstruction in patients with perfect preoperative preparation can be a resection and anastomosis, but most patients with colorectal cancer with incomplete obstruction or complete obstruction, due to bowel dilatation, thin wall, poor blood supply, the contents of the colon were mostly solid Or semi-solid, containing more bacteria, bacteria complex, and the majority of elderly patients, multiple organ complications, compensatory dysfunction, decreased immune function, it is generally considered poor surgical tolerance, a tumor