title: [Bilateral auditory canal squamous cell carcinoma].
abstract: Only a small number of cases of bilateral carcinomas of the external ear canal have been described in the literature. We present the first case of a 72 year old male patient with a bilateral squamous cell carcinoma of the external ear canal at a very early stage. A computed tomography of the temporal bone revealed a well-pneumatized mastoid on both sides. Both external ear canals were filled with soft tissue without radiological signs of destruction of the adjacent bone. The carcinomas of the external ear canal were surgically removed using a canal-wall down technique and a selective neck dissection of regions II-IV. Histology confirmed a well differentiated squamous cell carcinoma of the external ear canal without lymph node metastasis on both sides (TNM classification: pT1 G2 N0 M0 R0). Bilateral radiation therapy with 59.4 Gy resulted in stenosis of both ear canals. Hearing rehabilitation was achieved with bone conductive hearing glasses. Diagnosis und therapy of bilateral external ear carcinomas are presented and discussed.
authors.affiliation: Klinik für Hals-, Nasen- und Ohrenheilkunde, Kopf- und Halschirurgie der Ruhr-Universität Bochum.
authors.forename: S
authors.initials: S
authors.lastname: Shagdarsuren
authors.forename: M
authors.initials: M
authors.lastname: Schwaab
authors.forename: M
authors.initials: M
authors.lastname: Kissler
authors.forename: J
authors.initials: J
authors.lastname: Lautermann
authors.forename: H
authors.initials: H
authors.lastname: Sudhoff
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000628:therapy*; D004424:Ear Canal; D004428:Ear Neoplasms / Q000175:diagnosis* / Q000628:therapy*; D006801:Humans; D008297:Male; D016896:Treatment Outcome