原发性小肠恶性淋巴瘤临床少见。我科曾收治４例，现报告如下。临床资料：男３例，女１例；年龄８～７２岁。发病时间１２小时～７天。位于空肠１例，回肠３例。临床表现为单纯性小肠梗阻１例，肠套叠２例，肠穿孔１例。本组４例均体质消瘦，浅表淋巴结、肝、脾均无肿大。... Primary malignant lymphoma of the small intestine is rare clinically. Our department has been treated in 4 cases, the report is as follows. Clinical data: 3 males and 1 female; aged 8 to 72 years old. The onset time is 12 hours to 7 days. One case was in the jejunum and 3 in the ileum. The clinical manifestations included simple small intestinal obstruction in 1 case, intussusception in 2 cases, and intestinal perforation in 1 case. In this group, 4 cases were physical weight loss, no superficial lymph nodes, liver, spleen were swollen. ...