title: A problematic polyp.
authors: Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland.
authors: Bryan F
authors: BF
authors: Curtin
authors: Erik C
authors: EC
authors: von Rosenvinge
mesh_terms: D003111:Colonic Polyps / Q000473:pathology*; D003113:Colonoscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D012810:Sigmoid Diseases / Q000473:pathology*