大肠癌是最常见的恶性肿瘤之一 ,在我国的发病率逐年增高 ,但发生误漏诊屡见不鲜。我院 1992年 1月～ 2 0 0 2年 12月收住的结肠癌中有误漏诊史者达 3 3例 (均经病理检查证实 )。为提高大肠癌早期诊断率 ,现对误诊原因进行分析 ,并探讨减少误诊的措施。1　临床资料本组 3 5例 , Colorectal cancer is one of the most common malignant tumors, and the incidence in our country is increasing year by year, but it is not uncommon for misdiagnosis. Our hospital from January 1992 to December 2002 admitted to colon cancer in missed diagnosis of history of up to 33 cases (both confirmed by pathological examination). In order to improve the early diagnosis rate of colorectal cancer, the reason of misdiagnosis is analyzed and the measures to reduce the misdiagnosis are discussed. 1 clinical data of 35 cases in this group,