我院 1975～ 2 0 0 1年经大肠镜诊断结肠癌 5 0 3例 ,发现多原发大肠癌 2 8例 ,其中 6例异时多原发大肠癌[1～ 3 ] 及 10例高度异型增生病例均采用内镜下治疗。取得满意疗效。1　对象和方法1 1　对象　 6例多原发大肠癌 ,男 5例、女 1例 ;年龄 6 3～ 73岁 ,中位年龄 6 6岁。病 Colorectal cancer was diagnosed by colonoscopy in 503 cases in our hospital from 1975 to 2001. There were 28 cases of multiple primary colorectal cancer, of which 6 cases had multiple primary colorectal cancer [1-3] and 10 cases of high-grade Hyperplasia cases were treated with endoscopy. Achieve satisfactory results. 1 objects and methods 1 1 object 6 cases of multiple primary colorectal cancer, 5 males and 1 female; age 6 3 to 73 years, with a median age of 6 6 years. disease