Endoscopist's nose?
D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000295:instrumentation; D020685:Colonoscopes; D003113:Colonoscopy; D006801:Humans; D009784:Occupational Diseases / Q000473:pathology*; D012871:Skin Diseases / Q000209:etiology / Q000473:pathology*