Brain metastases from colon or breast cancer status post stereotactic radiation. There are postoperative findings related to craniotomy involving portions of the right parietal and temporal bones. There is unchanged high T2 signal in the treatment bed, but no associated enhancement. There is encephalomalacia in the left parietal lobe and left basal ganglia. There are also scattered nonspecific foci of T2 hyperintensity in the cerebral white matter. There is no evidence of acute intracranial hemorrhage or acute infarcts. The ventricles are unchanged in size and configuration. There is no midline shift or herniation. There is mild fluid signal within the right mastoid air cells. There are bilateral lens implants.
1. Stable post-treatment findings without evidence of intracranial tumor recurrence. 2. Chronic left parietal lobe and left basal ganglia infarcts.