原发性小肠肿瘤比较少见,我室1955～1990年共收诊59例,占同期消化道肿瘤的4.65%。其中男性37例,女性22例,男女之比为1.68∶1,年龄4～72岁,平均44.6岁,良性肿瘤16例(27%)、恶性肿瘤43例(73%),分别占同期消化道良、恶性肿瘤的30.19%和3.53%。出现症状和体征者占90%,病程2天～15年,其中62%的病例病程短于半年。主要临床表现良性肿瘤顺次为腹痛、便血、呕吐、肠梗阻、肠套叠;恶性肿瘤顺次为腹 Primary small intestine tumors are rare. In our department from 1955 to 1990, 59 cases were diagnosed, accounting for 4.65% of the gastrointestinal cancers in the same period. There were 37 males and 22 females. The male to female ratio was 1.68:1, aged 4 to 72 years, mean 44.6 years, benign tumors in 16 (27%), and malignant tumors in 43 (73%), respectively. 30.19% and 3.53% of benign and malignant tumors. Symptoms and signs accounted for 90%, duration of 2 days to 15 years, of which 62% of the cases of the disease course is shorter than six months. The main clinical manifestations of benign tumors were abdominal pain, hematochezia, vomiting, intestinal obstruction and intussusception; the malignant tumors were abdomen.