[A case report of mixed tumor of naevus sebaceuscum and naevus pigmentosus in the external auditory canal, and its statistical investigation in Japan].
D004424:Ear Canal; D006801:Humans; D007564:Japan; D009506:Nevus; D009508:Nevus, Pigmented; D012878:Skin Neoplasms
EAR CANAL; NEVUS; NEVUS, PIGMENTED