抄録
Twenty one patients with extracranial neurinomas of the head and neck were treated at Tenri hospital from 1970 to 1992. The origin was the vagus nerve in 5 patients, cervical nerves in 4, the sympathetic trunk in 2, etc. The most common symptom was a mass in the neck. Only 3 patients had pre-operative palsy of the nerve of origin. MRI was especialy useful for the diagnosis. The tumors showed low intensity on T1 weighed images and high intensity on T2 weighed images and peripheral hyperintense rim with central low intensity on enhanced T1 images. Intracapsular removal of the tumor was performed in 8 patients who had post-operative nerve palsy: 5 of them recovered from the palsy. Only one patient had a recurrence after intracapusular resection. It was concluded that intracapusular removal is useful.
