Benign neoplasm of brain, unspecified [D33.2], Reason for Study: ^Reason: Post op crani tumor resection History: Post op crani tumor resection Previously shown large anterior cranial fossa meningioma has been removed with bifrontal craniotomy. There is fluid-fluid level (with blood) at the resection cavity, in particular interhemispheric fissure and some fluid collection bifrontal extra axial spaces. Parenchymal edema of bilateral frontal lobes appear to be unchanged or slightly lessen comparing to prior scan. On Gad enhanced scan, surrounding reactive dural enhancements are seen, however, there is no evidence of residual enhancing mass.There is no new parenchymal hemorrhagic lesion on this scan.There are, however, a couple of restricted diffusion lesions indicating acute ischemic infarctions on the right posterior aspect of mid pons and right cerebellar hemisphere without evidence of hemorrhagic conversion. Slightly dilated ventricular system especially right lateral ventricle is again seen, grossly unchanged since prior scan. 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. Post operative changes of bifrontal meningioma resection.2. No evidence of residual enhancing mass on this scan.3. Small foci of restricted diffusion lesions on the right mid pons and right cerebellar hemisphere indicating acute ischemic infarction.