title: Tracheal carcinoma obscured by an endotracheal tube.
mesh_terms: D000368:Aged; D001999:Bronchoscopy; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000473:pathology; D006801:Humans; D007442:Intubation, Intratracheal; D008297:Male; D014134:Tracheal Neoplasms / Q000175:diagnosis* / Q000473:pathology