Benign neoplasm of meninges, unspecified [D32.9], Reason for Study: Evidence of prior bilateral posterior parietal craniotomy.There is relatively well circumscribed homogeneously enhancing extra axial mass adjacent to the superior sagittal sinus around the area of the right parieto-occipital fissure. The lesion appears to be slightly increased in size comparing to prior scan (12.2mm x 13.4mm, was 9.4mm x 11/8mm).The superior sagittal sinus at the level of the mass appears to be a bit obliterated due to the mass but reconstituted at the level of occipital lobe area. There is no evidence of venous congestive encephalopathy.There is no evidence of prominent cortical veins indicating rerouting of venous flow. Redemonstration of right cuneus and precuneus encephalomalacia with a some susceptibility artifacts indicating postoperative changes, unchanged since prior scan.The ventricles, sulci and cisterns are symmetric and unremarkable. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The mastoid air cells are clear.Bilateral maxillary sinuses show mucosal thickenings.
1. Interval increase in size of parasagittal, around the area of right parieto-occipital fissure, extra dural mass, likely representing residual meningioma since prior scan.2. No evidence of acute ischemic or hemorrhagic lesion.3. Postoperative status with postoperative encephalomalacia of the right cuneus and precuneus, unchanged.