Case 16: Facial Nerve Schwannoma with Middle Cranial Fossa Involvement

A 26-year-old man presented with a 6‐8-month history of progressive right-sided facial weakness. This was preceded by dryness of the right eye. The patient also reported a sensation of fullness or fluid within his right ear, and he subsequently experienced decreased hearing in that ear. At physical examination, facial sensation and visual acuity were normal. There was a House grade III right-sided facial paresis. Audiometry revealed right-sided conductive hearing loss. The lower cranial nerves were intact, and other neurologic test results were unremarkable. Magnetic resonance (MR) imaging (Fig 1) and computed tomography (CT) (Fig 2) were performed.