MRI of the IACs was taken with and without contrast, thin sections, in coronal and axial images. Images through the whole head were also performed, both pre and postcontrast.
There is no abnormal enhancement noted, not only in the cerebellopontine angle and IAC regions but throughout the remainder of the head. Images through the whole head were also performed and do not show suspicious change.
There is a mild and diffuse amount of atrophy noted on the exam. Some mild enlargement of the ventricles is also seen, but it is quite minimal. The craniocervical junction on the lateral sagittal images is intact and does not present with a Chiari malformation.
IMPRESSION:
1. There is no evidence of a tumor, which enhances or nonenhancing in the internal auditory canal or cerebellopontine angle bilaterally.
2. No abnormal enhancement is noted throughout the exam.
3. There is abnormal presumed mucosal inflammation and edema suggested in the left mastoid air cells and including the left middle ear cavity suggestive of significant inflammation.
4. Two small areas of demyelination suggested in the right gray-white matter junction region of the superior parietal and then the parietooccipital region. These are most likely very small vessel insults. Again, they do not enhance.
