37 year old status post cerebellar biopsy. A small focus of blood with surrounding edema is present in the left cerebellar hemisphere. The fourth ventricle is slightly displaced by related mass effect and the left quadrigeminal cistern is effaced. Accounting for differences in technique, the right frontal region of encephalomalacia appears unchanged from the MRI dated 4/22/2008. The anterior horn of the right lateral ventricle is mildly enlarged, likely reflecting adjacent volume loss. A surgical bony defect is present in the left aspect of the occipital bone. The patient is status post right frontoparietal craniotomy.The visualized paranasal sinuses and mastoid air cells are normally pneumatized.High attenuation structure noted near the roof of the left orbit may be related to previous ocular procedure -- correlate with history.
1. Postoperative findings of cerebellar biopsy with minimal mass effect.2. Unchanged right frontal encephalomalacia.3. Additional abnormalities as detailed above.