A giant colorectal juvenile polyp in an adult.

A 24-year-old man presented to our hospital because he found that his stool with intermittent blood for one month. The patient was healthy in the past. The patient had no family history of colorectal polyps or cancer. Gastroscopy showed normal. Colonoscopy revealed a solitary polyp with a long peduncle in the sigmoid colon, about 3.0cm in diameter, congestive edematous and erosion on the surface and chicken skin‑like in the surrounding mucosa. A clip was applied to the stalk and then the polyp was excised by electrocoagulation with a snare. Histopathological analysis revealed that the polyp was a juvenile polyp without any malignant signs.