Though villous adenomas are less common than adenomatous polyps, they are much more likely to have invasive carcinoma in them (about 40% of villous adenomas).

• 虽然绒毛状腺瘤不如腺瘤息肉那么常见，但更有可能恶变为癌（大约40%25的绒毛腺瘤）。