Benign neoplasm of cerebral meninges [D32.0], Reason for Study: ^Reason: hx meningioma. eval change. History: surveillance No evidence of acute ischemic or hemorrhagic lesion.Extra axial mass lesions are seen one on the left convexity (10mm x 6.4mm), and another on the right convexity [43mm (AP) x 21.4mm(CC) x 35.7mm(RL)] parietal lobe area. There is no evidence of adjacent brain edema, nor evidence of mass effect. The masses do not show enhancement but show well circumscribed low signal intensity on T2 and high signal intensity on T1 with evidence of fat suppression. Differential diagnosis include meningioma with fatty degeneration.There are encephalomalacia on bilateral frontal operculum with evidence of gliotic changes indicating chronic ischemic infarctions (left more extensive than right).Several scattered lacunar infarctions are seen on bilateral cerebellar hemispheres, lower pons and bilateral basal ganglia.The ventricles, sulci and cisterns are unremarkable. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. Bilateral convexity extra axial masses likely represent meningiomas (left side bigger than right).2. Multifocal scattered lacunar infarctions as well as chronic ischemic infarctions with encephalomalacia involving bilateral frontal operculum.3. No evidence of acute ischemic or hemorrhagic lesion.