大肠息肉是一种常见的良性肿瘤，其中腺瘤性息肉与大肠癌的发生有密切关系［１］。本文应用流式细胞计对不同病理类型的大肠息肉组织细胞ＤＮＡ定量分析，探讨各类息肉尤其是腺瘤性息肉由轻度到重度异型增生，及大肠癌不同阶段组织细胞ＤＮＡ含量的变化规律，为临床正确处理各 Colorectal polyps is a common benign tumor, in which adenomatous polyps have a close relationship with the occurrence of colorectal cancer [1]. In this paper, flow cytometry was used to quantitatively analyze the DNA of different pathological types of colorectal polyps, and the changes of DNA content in various types of polyps, especially adenomatous polyps from mild to severe dysplasia, and in different stages of colorectal cancer, were discussed. For clinical treatment of each