小肠占消化道总长的75%,但原发性小肠肿瘤仅占消化道肿瘤的1%～5%[1],以恶性肿瘤居多。小肠肿瘤虽然发病率低,但其临床表现各异,缺乏特征性。由于检查条件有限,故误诊率高。现就我院1993年2月至1998年12月收治的,经手术和病理证实的20例原发性小肠肿瘤作临床分析。1　资料与方 The small intestine accounts for 75% of the total length of the digestive tract, but the primary small intestine tumors only account for 1% to 5% of the digestive tract tumors [1]. Malignant tumors are predominant. Although the incidence of small intestinal tumors is low, but its clinical manifestations vary, lacking characteristics. Due to limited inspection conditions, the rate of misdiagnosis is high. The clinical analysis of 20 cases of primary small bowel tumors confirmed by surgery and pathology in our hospital from February 1993 to December 1998 was performed. 1 Materials and parties