小肠是人体中唯一对肿瘤有很高抵抗力的器官;除细菌学的因素和小肠流体内容物的迅速通过是导致这个现象的明显原因外,小肠的内在保护系统被解释为小肠肿瘤极端少见的重要理由。 (一)小肠肿瘤的发病率: 小肠是最少发生癌瘤的器官之一。胃肠道这一部份的肿瘤少见,如考虑到下列情况就显得更为突出:(1) 小肠邻近的胃与结舯癌瘤发病率高。(2) 小肠具有广大的表面面积,而发 The small intestine is the only organ in the body that is highly resistant to tumors. Except for bacteriological factors and the rapid passage of small intestine fluid contents, which is the obvious cause of this phenomenon, the intestine’s intrinsic protection system is interpreted as extremely rare for small intestine tumors. Important reason. (I) Incidence of small intestinal tumors: The small intestine is one of the organs that least develops cancerous tumors. This part of the tumor in the gastrointestinal tract is rare, and becomes even more prominent if one considers the following: (1) The incidence of cancer of the stomach and crust adjacent to the small intestine is high. (2) The small intestine has a large surface area and hair