在整个胃肠道肿瘤中原发于小肠者少见,据文献报告其发病率为1—6%。我院外科从1955—1976年10月,21年共收治原发性小肠肿瘤40例,经手术及病理证实者39例,其中良性20例,恶性19例,现分析报告如下: In the entire gastrointestinal cancer, the primary origin in the small intestine is rare, according to the literature reported its incidence rate of 1-6%. In our hospital from October 1955 to October 1976, 40 cases of primary small bowel tumors were treated in 21 years. 39 cases were confirmed by surgery and pathology, of which 20 cases were benign and 19 cases were malignant. The analysis report is as follows: