Meningioma resection. There are postoperative findings related to recent biparietal craniotomy with scattered pneumocephalus. There is residual enhancing tumor along the left anterolateral aspect of the resection cavity that measures up to 20 mm in width. There is also restrcited diffusion along the margins of the resection cavity that measure up to 35 mm. Otherwise, there is no significant interval change in the extent of confluent T2 hyperintensity in the bilateral posterior cerebral hemisphere white matter, which may represent vasogenic edema, as well as unchanged left parieto-occipital encephalomalacia. There are mild foci of susceptibility effect in the brain parenchyma surrounding the tumor, which may represent blood products. The ventricles are unchanged in size and configuration. There is no midline shift or herniation. The posterior superior sagittal sinus is obliterated. There is a partially-empty sella. There is mild mucosal thickening in the left sphenoid sinus. There is persistent right tympanomastoid fluid.
1. Postoperative findings related to recent partial resection of the posterior falcine meningioma with areas of acute ischemia along the margins of the resection cavity.2. Persistent right tympanomastoid fluid may represent otomastoiditis.