大肠原发性恶性淋巴瘤临床上少见,国内报道约占大肠原发性恶性肿瘤的1.1％～1.9％,因缺乏特异性的临床表现,早期不易诊断,术前误诊率在3/4以上。我院在1980～1995年共收治9例,占同期大肠原发性恶性肿瘤1.3％,结合文献对本组病例诊治进行分析。 1 临床资料 1.1 一般资料:男性6例,女性3例,年龄22～80岁,平均53.4岁,病程平均8.5个月。全部病例 Primary malignant lymphoma in the large intestine is rare in clinical practice. Domestic reports account for approximately 1.1% to 1.9% of primary colorectal malignancies. Due to the lack of specific clinical manifestations, early diagnosis is not easy and the misdiagnosis rate before surgery is above 3/4. In our hospital from 1980 to 1995 a total of 9 cases were treated, accounting for 1.3% of the primary malignant tumor of the large intestine in the same period. The diagnosis and treatment of this group of cases were analyzed with literature. 1 Clinical data 1.1 General information: 6 males and 3 females, aged 22 to 80 years, mean 53.4 years, mean duration of 8.5 months. All cases