Abstract: The study of 72 cases of primary tumors of the small bowel is reported in this paper.Among them,21(29.2%)are benign and 51(70.8%)are maligmant.In the 72 cases of the small bowel the lesion occurred in duodenum in 26 cases,in jejunum in 24 cases, in ileum in 22 cases.21 cases of benign tumor are follows:leiomyoma (7/21),lipoma(6/21),neurofibroma(3/21),adenoma(2/21), hemangioma(1/21),fibroma(1/21)and harmatoma(1/21),51 cases of malignamt tumor are as follows:adenocareinoma(22/51),non- Hodgkin's lymphoma(16/51),leiomyosarcoma(8/51),Hod gkin's disease(2/51),neurofibro-sarcoma(1/51),carcinoid(1/51)and duodenal ulcer with maligmant change(1/51),metastasis are frequent in most cases(46.7%). The 5 year postoperated survival rate in 25 cases was 13.7%.

Key words: small bowel, primary tumor