我们把我院 1997- 0 1～ 2 0 0 1- 0 2经电子肠镜检查及病理证实的大肠癌 416例进行了回顾性分析 ,以便为大肠癌患者的诊治提供参考。1　临床资料本组男 2 45例 ,女 171例 ,男女之比为 1.4∶ 1。年龄 2 0～ 83岁 ,平均 5 3.1岁。其中 35岁以下青年患者 48例 (11.5 % ) ,36～5 9 We retrospectively analyzed 416 patients with colorectal cancer confirmed by electronic colonoscopy and pathology in our hospital in order to provide reference for the diagnosis and treatment of patients with colorectal cancer. 1 The clinical data of this group were 45 males and 171 females, with a male to female ratio of 1.4:1. Age 20-83 years old, average 5 3.1 years old. Among them, 48 patients (11.5 %) were younger than 35 and 36 to 5 9