Benign neoplasm of meninges, unspecified [D32.9], Reason for Study: ^Reason: h/o tentorial meningoma History: surveillance There is 16mm x 13mm x 14mm sized left posterior fossa extra axial well circumscribed enhancing lesion which extends into the occipital bone but the outer table appears to be intact. The lesion generates minimal mass effects against the left cerebellar hemisphere, no change since prior scan. The size and MR characteristics do not show any significant interval change since prior scan. There is no evidence of acute ischemic or hemorrhagic lesion on the scan.Underlying brain shows multifocal scattered high signal intensity lesions on FLAIR/T2 weighted images on bihemispheric white matter indicating nonspecific small vessel ischemic disease. No change 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 paranasal sinuses and mastoid air cells are clear.
1. No interval change of the left posterior fossa extra axial mass lesion in terms of size and MR characteristics since prior scan.2. No change of non specific small vessel ischemic disease since prior scan.