Facial Nerve Neurolymphomatosis That Extends to Both the Brainstem and Extracranial Regions

A 73-year-old female developed right facial paralysis of House-Brackmann (H-B) grade III and was diagnosed with Bell's palsy. After three months steroid therapy, she progressive hearing loss, an MRI revealed a tumor in the internal auditory canal. Within few months, nerve palsy recurred, patient treated Gamma Knife radiosurgery. The irradiated region disappeared, but new dysphagia observed, parotid gland detected for first time. Tumors digastric muscle jaw were surgically resected, diagnosis diffuse large B-cell lymphoma made. had invaded cranial nerves brainstem region, did not wish to undergo further medical therapy. This case malignant that started as brainstem, testing possible at early stage prior radiotherapy desirable.