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Radiotherapy-related cranial nerve palsy may occur in patients with NPC after they receive conventional radiotherapy. Hypoglossal nerve palsy was found the most frequently in this series, followed by vagus nerve palsy and recurrent laryngeal nerve palsy. Neck fibrosis and the course of the three nerves through the neck may be important risk factors for the development of palsy. The diagnosis must be made only after the possibilities of tumor-induced palsy and idiopathic palsy are excluded. Surgery is helpful in improving the quality of life in many patients.
Lin et al. (Thu,) studied this question.
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