舌下神経に発生した顎下部神経鞘腫例

概要

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Hypoglossal nerve neurinoma was diagnosed in a 70-year-old female. Neurinoma is common in the head and neck region ; but identification of the nerve of origin is difficult, and neurinoma involving the hypoglossal nerve is rare. Most such neurinomas are intracranial and those of the hypoglossal nerve in the submandibular region are extremely rare. A review of the literature, found only 6 reports of submandibular hypoglossal nerve neurinoma (including the present case). Our patient was treated with open reduction and the tumor was removed from the hypoglossal nerve, which was reconstructed by interposition end-to-end anastomosis with the major auricular nerve. Microscopically, this tumor was an Antonny A and B mixed type tumor. The postoperative condition has been good.Neurinomas involving motor neurons are treated with tumor enucleation or resection. Tumor enucleation is potentially the ideal treatment ; however, paresis of the nerve of origin and recurrence of the tumor are frequent events. Tumor resection with nerve reconstruction is better surgical treatment if the patient is able to endure the temporary paresis.
耳鼻咽喉科臨床学会の論文