title: [Bilateral primary carcinoma of the external auditory meatus].
abstract: We report an extremely rare case of bilateral primary carcinoma of the external auditory meatus. A 50-year-old man suffered 1 month from left-ear discharge and otalgia. Examination revealed a tumor of the left ear canal and a biopsy showed well-differentiated squamous cell carcinoma. The patient underwent 60 Gy radiotherapy and left subtotal temporal bone resection. A tumor with irregular swelling of the right external canal was found 8 months after the first diagnosis. Biopsy of the right external canal confirmed the same squamous cell carcinoma. Genetic examination that the carcinoma of the right ear was probably not a metastatic from the carcinoma of the left ear.
authors: Department of Otorhinolaryngology, Miyazaki Medical College, Miyazaki.
authors: H
authors: H
authors: Ohsako
authors: A
authors: A
authors: Haruta
authors: Y
authors: Y
authors: Tsuboi
authors: K
authors: K
authors: Matsuura
authors: S
authors: S
authors: Komune
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000235:genetics / Q000473:pathology*; D004424:Ear Canal; D004428:Ear Neoplasms / Q000235:genetics / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged