MRI Report.
Date done 8-11-08
Compared to past MRI on 5-23-06
PT with visual field disturbance and loss of balance. please Eval r/o optic nerv/brain lesion.
report:
Multiplanar multi-sequence MR imaging of the brain and orbits was performed before and after intravenous administration of 10 cc of multihance contrast media.
Findings:
Brain:
The corpus callosum and other midline brain structures are normally formed. The cerebellar tonsils are somewhat low lying, as before.
The major arterial flow voids of the brain appear patent. There is no intracranial mass effect.
No acute infarct is seen on diffusion weighted imaging. The brain is intinsically normal in signal for patient age.
A developmental venous anomaly in the right parietal lobe is again seen. Otherwise, no abnormal parenchymal or leptomeningeal enhancement is identified.
Mucosal thickening is seen in rare mastoid air cells bilaterally. The temporomandibular joints articulate normally.
The major dural venous sinuses appear patent. The calvarium appears intact.
Orbits:
The globes appear intact. No periorbital soft tissue swelling is identified. The lacrimal apparatus appears normal bilaterally.
The optic nerves and extraocular muscles appear symmetric. No inflammatory changes are seen in either orbit.
No masses are seen in the suprasellar cistern. Optic chiasm is grossly unremarkable.
Mild leftward displacement of the infundibulum is seen. This may be developmental, as the contents of the sella appears to enhance homogeneously.
Meckel's caves and the cavernous sinuses are grossly unremarkable.
A mucus retention cyst is present in the alveolar recess of the right maxillary sinus. Otherwise, paranasal sinuses are grossly clear.
Impression:
1. Grossly normal MR evaluation of the orbits
2. no acute intracranial findings or evidence for intracranial mass lesion.
3. Minimal inflammatory mucosal changes involving the mastoid air cells bilaterally and the right maxillary sinus.
4. Low lying cerebellar tonsils, without evidence for frank chiari malformation or supratentorial hydrocephalus.
