title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 46-1976.
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000175:diagnosis; D003937:Diagnosis, Differential; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis / Q000473:pathology; D008297:Male; D011471:Prostatic Neoplasms / Q000175:diagnosis; D012004:Rectal Neoplasms / Q000473:pathology; D012007:Rectum / Q000473:pathology; D012185:Retroperitoneal Fibrosis / Q000175:diagnosis / Q000473:pathology*; D012811:Sigmoid Neoplasms / Q000175:diagnosis; D014517:Ureteral Obstruction / Q000175:diagnosis / Q000473:pathology