Cartilaginous choristoma is a rare benign lesion of the external auditory canal, generally found incidentally on physical exam in an asymptomatic patient. Our patient had the largest cartilaginous choristomas described in the literature to date. Additionally, this reviews the nomenclature and differential diagnoses of masses within the external auditory canal.
Keywords: cartilaginous choristoma; chondroma; choristoma; external auditory.