原发性小肠恶性肿瘤是一少见的消化道恶性肿瘤。我们自1961年10月至1981年10月20年间共收治30例,均经手术及病理证实。现报告如下。临床资料性别、年龄:男性16例,女性14例;年龄最大76岁,最小23岁;50岁以上占60%。平均发病年龄分别为癌53.7岁,平滑肌肉瘤37.9岁,恶性淋巴瘤41岁。发病部位:回肠17例(57%),十二指肠6例(20%),空肠4例(13%),多发性3 Primary malignant tumors of the small intestine are a rare malignant tumor of the digestive tract. We have treated 30 cases from October 1961 to October 20, 1981, and were confirmed by surgery and pathology. The report is as follows. Clinical data Gender, age: 16 males and 14 females; the oldest 76 years old, youngest 23 years old; 50 years old and above 60%. The average age of onset was 53.7 years for cancer, 37.9 years for leiomyosarcoma, and 41 years for malignant lymphoma. Pathogenesis: 17 ileum (57%), 6 duodenum (20%), 4 jejunum (13%), multiple 3