本文对118例大肠癌、11例大肠腺瘤和5例大肠粘膜作对照，用真彩色医学图像分析系统（CMIAS）进行了细胞核DNA含量测定，结果，2C含量中，正常组为51．9±13.92，腺瘤组为29．41±13．58，癌组为19．92±17．33，两两比较具统计学意义，5C、＞5C中，腺瘤组与癌组作比较则差别不明显，表明腺瘤在组织学上经常出现异型的另一客观指标，同时可能在术前了解大肠癌异倍体，对治疗有所帮助。 In this paper, 118 cases of colorectal cancer, 11 cases of colorectal adenoma, and 5 cases of large intestine mucosa were used as controls, and the nuclear DNA content was measured with the colorimetric medical image analysis system (CMIAS). As a result, in the 2C content, the normal group was 51.9. 13.92, the adenoma group was 29.41±13.58, and the cancer group was 19.92±17.33, which was statistically significant. In 5C and >5C, the difference between the adenoma group and the cancer group was not significant. Obviously, it shows that the adenoma often histologically presents another objective indicator of abnormality, and at the same time it may be helpful to understand the aneuploidy of colorectal cancer before surgery.