サイバーナイフで治療した両側発症中耳癌例

概要

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Patients with carcinoma of the middle ear usually have a poor prognosis even after multidisciplinary treatment. We describe the rare case of a patient with bilateral middle ear carcinoma who was treated by stereotactic radiosurgery using the Cyberknife, and remained tumor free for more than five years after the therapy. The patient was sorely afflicted with persistent left otorrhea despite having undergone surgery for bilateral chronic otitis media and was diagnosed (confirmed by histopathological examination) as having carcinoma of the middle ear on the left side. FDG-PET imaging revealed accumulation in the right side ear also, however, the diagnosis of right middle ear carcinoma was finally made after five months by histopathological examination. He underwent stereotactic radiosurgery using the Cyberknife on two occasions, had no remarakable complications, and survived without tumor recurrence for more than five years. We suggest that stereotactic radiosurgery using the Cyberknife may be useful for the treatment of middle ear carcinoma, especially bilateral middle ear carcinoma, because of the reservation around the restriction by the surrounding organs.
耳鼻咽喉科臨床学会の論文