Diagnostic usefulness of rectal biopsy.
D001706:Biopsy; D003106:Colon / Q000033:anatomy & histology; D006801:Humans; D007413:Intestinal Mucosa / Q000033:anatomy & histology / Q000473:pathology; D012002:Rectal Diseases / Q000175:diagnosis* / Q000473:pathology; D012004:Rectal Neoplasms / Q000175:diagnosis*; D012007:Rectum / Q000473:pathology