title: Endoscopic appearance of Wegener's granulomatosis involving the colon.
mesh_terms: D000328:Adult; D003108:Colonic Diseases / Q000150:complications / Q000175:diagnosis*; D003113:Colonoscopy; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D014890:Granulomatosis with Polyangiitis / Q000175:diagnosis*; D006801:Humans; D008297:Male; D014456:Ulcer / Q000150:complications / Q000175:diagnosis