title: Adenomatous polyp of the sigmoid colon with focal squamous metaplasia.
mesh_terms: D003111:Colonic Polyps / Q000473:pathology*; D006801:Humans; D008297:Male; D008679:Metaplasia / Q000473:pathology; D008875:Middle Aged; D012811:Sigmoid Neoplasms / Q000473:pathology*