Rectum Rectum Rectum: Juvenile Polyp By Dr. Paul M. Choi Rectum 16 February 2013 Hits: 2271 Share: Facebook Twitter Google+ A 70 year old female who undewent colonoscopy for occult bleeding. Colonoscopic exam showed a bleeding juvenile (retention) polyp with surrounding mucosa with punctate, whitish changes whose biopsy was consistent with xanthelasma. Prev Next