title: Stereotactic radiosurgery for recurrent pleomorphic adenoma invading the skull base--case report--.
abstract: A 38-year-old man presented with a recurrent pleomorphic adenoma in the parapharyngeal space invading the skull base 19 years after the first operation for a parotid gland tumor. Stereotactic radiotherapy was performed to control the tumor growth using a marginal dose of 8 Gy and maximum dose of 18 Gy with care taken to minimize the dose to nearby structures. The symptoms were reduced within a few months. Magnetic resonance imaging over 5 years showed that the tumor was controlled with no regrowth. Stereotactic radiotherapy is a therapeutic option for the treatment of pleomorphic adenomas.
authors.affiliation: Department of Neurosurgery, Oita University Faculty of Medicine. kamida@med.oita-u.ac.jp
authors.forename: Tohru
authors.initials: T
authors.lastname: Kamida
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Abe
authors.forename: Ryo
authors.initials: R
authors.lastname: Inoue
authors.forename: Hidenori
authors.initials: H
authors.lastname: Kobayashi
authors.forename: Masashi
authors.initials: M
authors.lastname: Suzuki
authors.forename: Akira
authors.initials: A
authors.lastname: Matsumoto
mesh_terms: D008949:Adenoma, Pleomorphic / Q000473:pathology* / Q000601:surgery*; D000328:Adult; D006685:Hoarseness / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000473:pathology*; D018365:Neoplasm, Residual / Q000000981:diagnostic imaging / Q000473:pathology; D010307:Parotid Neoplasms / Q000473:pathology*; D010614:Pharynx / Q000473:pathology; D011859:Radiography; D016634:Radiosurgery / Q000379:methods*; D012469:Salivary Glands / Q000473:pathology; D019292:Skull Base Neoplasms / Q000473:pathology* / Q000601:surgery*; D016896:Treatment Outcome; D020421:Vagus Nerve Diseases / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D000160:Vestibulocochlear Nerve Diseases / Q000209:etiology / Q000473:pathology / Q000503:physiopathology