title: Correlation of bioptic histology and sigmoidoscopic observations on lower gastrointestinal tract.
mesh_terms: D001706:Biopsy; D003092:Colitis / Q000473:pathology; D006801:Humans; D007410:Intestinal Diseases / Q000473:pathology*; D007413:Intestinal Mucosa / Q000473:pathology*; D007414:Intestinal Neoplasms / Q000473:pathology*; D007420:Intestine, Large / Q000473:pathology*; D012812:Sigmoidoscopy