Re-evaluate vestibular schwannoma. There is a homogeneously enhancing mass within the left internal auditory canal that protrudes slightly into the left cerebellopontine angle cistern, measuring up to 13 mm in length. The left inner ear structures, including the cochlea, vestibule, endolymphatic duct, and semicircular canals, appear unremarkable. There is mild fluid within the left mastoid air cells and middle ears also appear unremarkable. The right temporal bone structures are unremarkable.
Unchanged left vestibular schwannoma.