de Witte, J [Coexistence of a polyp of the sigmoid and a cancer of the descending colon]. [electronic resource] - Journal belge de radiologie 1968 - 51-2 p. digital Publication Type: Journal Article ISSN: 0302-7430 Subjects--Topical Terms: Adenocarcinoma--complicationsAdultColon, SigmoidColonic Neoplasms--complicationsHumansIntestinal Polyps--complicationsMaleRadiography