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大肠癌多由腺瘤恶变而来,本文从临床病理学的观点论述大肠腺瘤的癌变问题。一、大肠腺瘤癌变的依据: 1.大肠腺瘤内常可发现腺瘤内癌,大肠癌内又常见残存的腺瘤组织,这种共存现象,表明二者有密切关系,已知腺瘤的癌变率为1.7～27％,而在14.2％的大肠癌中可发现有残留腺瘤组织。 2.临床上屡有报道已获确诊的大肠腺瘤后变为
Colorectal cancer is often caused by adenomas malignant transformation. This article discusses the canceration of colorectal adenomas from the perspective of clinical pathology. First, the colorectal adenoma on the basis of cancer: 1. Adenoma can often be found within the cancer, colorectal cancer and common residual adenoma tissue, this phenomenon of coexistence, indicating that the two are closely related, known adenoma The cancerous rate is 1.7 to 27%, and residual adenoma tissue can be found in 14.2% of colorectal cancers. 2. It has been reported repeatedly that clinically confirmed colorectal adenomas have become