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  • Title: Treatment of head and neck paragangliomas with external beam radiation therapy.
    Author: Dupin C, Lang P, Dessard-Diana B, Simon JM, Cuenca X, Mazeron JJ, Feuvret L.
    Journal: Int J Radiat Oncol Biol Phys; 2014 Jun 01; 89(2):353-9. PubMed ID: 24685154.
    Abstract:
    PURPOSE: To retrospectively assess the outcomes of radiation therapy in patients with head and neck paragangliomas. METHODS AND MATERIALS: From 1990 to 2009, 66 patients with 81 head and neck paragangliomas were treated by conventional external beam radiation therapy in 25 fractions at a median dose of 45 Gy (range, 41.4-68 Gy). One case was malignant. The median gross target volume and planning target volume were 30 cm(3) (range, 0.9-243 cm(3)) and 116 cm(3) (range, 24-731 cm(3)), respectively. Median age was 57.4 years (range, 15-84 years). Eleven patients had multicentric lesions, and 8 had family histories of paraganglioma. Paragangliomas were located in the temporal bone, the carotid body, and the glomus vagal in 51, 18, and 10 patients, respectively. Forty-six patients had exclusive radiation therapy, and 20 had salvage radiation therapy. The median follow-up was 4.1 years (range, 0.1-21.2 years). RESULTS: One patient had a recurrence of temporal bone paraganglioma 8 years after treatment. The actuarial local control rates were 100% at 5 years and 98.7% at 10 years. Patients with multifocal tumors and family histories were significantly younger (42 years vs 58 years [P=.002] and 37 years vs 58 years [P=.0003], respectively). The association between family predisposition and multifocality was significant (P<.001). Two patients had cause-specific death within the 6 months after irradiation. During radiation therapy, 9 patients required hospitalization for weight loss, nausea, mucositis, or ophthalmic zoster. Two late vascular complications occurred (middle cerebral artery and carotid stenosis), and 2 late radiation-related meningiomas appeared 15 and 18 years after treatment. CONCLUSION: Conventional external beam radiation therapy is an effective and safe treatment option that achieves excellent local control; it should be considered as a first-line treatment of choice for head and neck paragangliomas.
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