colorectal juvenile polyp (MONDO_0006161) is a non-neoplastic hamartomatous polyp that arises from the colon and rectum. It is characterized by the presence of tortuous and cystically dilated glands, edematous changes, and inflammation. Also known as: colorectal retention polyp, juvenile polyp of large bowel, juvenile polyp of the large bowel, large bowel juvenile polyp, large intestinal juvenile polyp.