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原发性小肠肿瘤发病率较低 ,术前不易确诊。小肠占整个消化道全长的 2 / 4～ 4/ 5 ,粘膜面积占消化道总面积的 90 %左右 ,但小肠肿瘤比消化道其它部位的肿瘤发病率低 ,仅占胃肠道肿瘤的 1～ 3.6 % [1 ] 。1 材料与方法本组材料收集协和医院病理科 1980～ 1999年存档的小肠肿瘤
The incidence of primary small bowel tumors is low and it is not easy to diagnose before surgery. The small intestine accounts for 2/4 to 4/5 of the total length of the entire digestive tract, and the mucosal area accounts for about 90% of the total area of the digestive tract. However, the incidence of small intestine tumors is lower than that of other parts of the digestive tract, accounting for only 1 of the gastrointestinal tumors. ~ 3.6 % [1]. 1 Materials and Methods Materials collected from the Department of Pathology, Union Hospital, 1980-1999 archived small intestine tumors