title: [A case of squamous-cell carcinoma originating in external auditory canal cholesteatoma].
abstract: External auditory canal cholesteatoma (EACC) is not a rare lesion. Conservative treatment under an operating microscope is appropriate for most cases. On the other hand, squamous-cell carcinoma of middle ear and external auditory canal is less common. We report a case of a 66-year-old man. He suffered from squamous-cell carcinoma following EACC. A biopsy from the external auditory canal was not useful for diagnosis. A biopsy during the first operation revealed squamous-cell carcinoma. The patient was treated by extended radical mastoidectomy and radiotherapy continuously. There is no evidence of recurrence after 14 months.
authors.affiliation: Department of Otorhinolaryngology, Nippon Medical School Second Hospital, Kanagawa, Japan.
authors.forename: Hideharu
authors.initials: H
authors.lastname: Aoki
authors.forename: Kouji
authors.initials: K
authors.lastname: Matsumoto
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000209:etiology*; D002781:Cholesteatoma / Q000150:complications*; D004424:Ear Canal; D004428:Ear Neoplasms / Q000209:etiology*; D006801:Humans; D008297:Male