顔面神経鞘腫の２症例

Abstract

The first patient was a 48-year-old male with progressive right hearing loss and facial palsy. The first diagnosis was Bell's palsy, but CT and MRI showed a tumor expanding from the middle ear to the middle cranial fossa. Total removal was accomplished through a middle cranial approach, and the facial nerve and the hypoglossal nerve were anastomosed. The second patient was a 60-year-old female with relapsing right facial palsy and a right parotid tumor. Bell's palsy had been diagnosed ten years earlier, and steroid therapy brought prompt relief. CT and MRI showed a tumor expanding from the middle ear to the parotid gland. Total removal was accomplished, and the major auricular nerve was transplanted.The symptoms of facial nerve neurinoma differ with its site of origin. Facial nerve neurinoma may be misdiagnosed as Bell's palsy, especially if the palsy is of sudden onset or is relapsing.