Benign neoplasm of cerebral meninges [D32.0], Reason for Study: ^Reason: h/o right frontal meningioma History: surveillance About 15mm x 10mm sized right frontal meningioma does not show any interval change in terms of MR signal characteristics and size since prior scan.There is about 11mm x 9mm sized round area within the occipital bone which shows low signa intensity on T2, low on T1 and showed intense enhancement on post Gad images. On 3D SPGR images, the lesion appears to be connected with the right jugular fossa. Thus, likely diagnosis of this lesion is intra osseus venous plexus or intra osseous venous lake. Underlying brain shows scattered high signal intensities on bilateral centrum semiovale and periventricular white matter on FLAIR imaging indicating nonspecific small vessel ischemic disease.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia. 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. Right maxillary sinus shows small retention cyst.
1. Right frontal meningioma, 15mm x 10mm, no change in terms of size and MR characteristics since prior scan.2. Nonspecific small vessel ischemic disease, no change since prior scan.3. Prominent intraosseous area suggesting venous lake on the right occipital bone, no change since prior scan.4. No evidence of acute ischemic or hemorrhagic lesion.