Status post resection for atypical meningioma. There are postoperative findings related to parietal craniotomy for resection of a left parietal convexity meningioma. There is no evidence of gross residual tumor. However, there are bilateral frontal convexity fluid collections with areas of restricted diffusion and fluid-fluid levels on the left. The right fluid collection measures up to 12 mm in thickness and the left fluid collection measures up to 16 mm in thickness and there is associated mild mass effect upon the underlying brain parenchyma. However, there is no midline shift. There is persistent mild signal abnormality in the left frontoparietal brain parenchyma. The sulcal T2 hyperintensity in the region has resolved, however. There is mild mucosal thickening in the maxillary sinuses. The orbits are unremarkable.
1. Postoperative findings with residual bilateral frontal convexity extra-axial fluid collections that may represent seromas and less likely empyemas.2. No evidence of gross residual tumor, but persistent mild signal abnormality in the underlying brain parenchyma, which may represent gliosis or edema.