title: Collagenous papules in the external auditory canal.
mesh_terms: D000368:Aged; D003094:Collagen; D004424:Ear Canal / Q000473:pathology*; D004428:Ear Neoplasms / Q000473:pathology*; D006801:Humans; D008297:Male; D010212:Papilloma / Q000473:pathology*
chemical_list: D003094:Collagen