Grade II meningioma, s/p surgery and SRS. There are post-treatment findings related to right parietal craniotomy and radiation therapy. There is no significant interval change in size of an enhancing dural based lesion deep to the craniotomy, with extension to the superior sagittal sinus. There is also no significant interval change in size of the enhancing dural-based lesion along the right lateral parietal convexity with infiltration of the craniotomy flap margin. There are also small tumors along the posterior and lateral occipital convexities. There is persistent high T2 signal and scattered areas of gyriform enhancement in the posterior parietal lobes near the midline. There is no evidence of acute cerebral infarction. The ventricles are unchanged in size and configuration. There is no midline shift or herniation. There is a partially-empty sella. The skull and extracranial soft tissues are unchanged.
1. No significant interval change in size of the residual tumor in the right parasagittal surgical bed and lateral right parietal convexity. There are also small tumors along the posterior and lateral occipital convexities. 2. Persistent treatment effects in the bilateral posterior cerebral hemispheres, likely related to radiation necrosis.