腺瘤息肉表面出血（这就是为什么他们经常以血便就诊），有一条长而窄的蒂。息肉超过2厘米时提示恶性的可能性大。但是，这个息肉证明是良性的。
This adenomatous polyp has a hemorrhagic surface (which is why they may first be detected with stool occult blood screening) and a long narrow stalk. The size of this polyp--above 2 cm--makes the possibility of malignancy more likely, but this polyp proved to be benign.
