Objective:To investigate clinical manifestations

histopathological patterns and effective diagnostic methods for benign neoplasm in small intestine.Methods:The data of 31 pathologically confirmed cases admitted from January 1978 to June 2002 in our hospital were analyzed retrospectively.Results:Main pathological patterns of benign neoplasm were leiomyoma

angioma

adenoma

and neurilemmoma.Thirteen

ten and eight cases were located in jejunum

ileum and duodenum respectively.The common clinical manifestations were abdominal pain

anemia and hemorrhage

and obstructions.The neoplasm was easily confused with other digestive tract diseases.Positive diagnosis rate was lower with routine endoscopy and barium meal.Conclusion:Main pathological patterns of benign neoplasm are leiomyoma

angioma

adenoma

neurilemmoma and its non-specific clinical manifestations will cause misdiagnosis.Diagnostic methods are lacking and small intestinal endoscopy and selectivel angiography of celiac artery can increase diagnosis rate.