Anaplastic meningioma left parietal region, status post STR and XRT.. Redemonstrated are postoperative findings related to left parietal convexity meningioma resection. There is been continued evolution of postsurgical changes including development of an area of encephalomalacia involving the medial aspect of the left precentral gyrus and decrease in enhancement within this region. Chronic blood products in this region are again evident. Extent of FLAIR hyperintensity related to gliosis in the left posterior frontal lobe and in the left parietal lobe is not significantly changed. There remains enhancement along the left mid posterior aspect of the superior sagittal sinus which may represent minimal residual tumor, but is decreased in prominence since immediate postoperative study from 7/29/2015 likely related to decrease in associated postoperative changes. Superior sagittal sinus remains patent. No new or enlarging mass is appreciated. Small extra-axial collection at the level of the left parietal craniotomy is slightly decreased with adjacent enhancement which is likely reactive. Ventricles are normal in size. No midline shift or herniation. Major flow-voids are preserved. Evidence of mild global parenchymal volume loss is again evident. Mild mucosal thickening/mucous retention cysts involving the floor of the maxillary sinuses again seen.
Continued evolution of postsurgical changes. Minimal residual tumor involving the superior sagittal sinus is again suspected. No new or enlarging lesion to suggest tumor progression.