Benign neoplasm of brain, unspecified [D33.2], Reason for Study: ^Reason: Inflammatory pseudotumor; f/u progression History: headaches Redemonstration of left frontoparietal craniotomy with parasaggital dural based mass resection status, unchanged since prior scan.Previously seen left cerebral convexity dural thickening and enhancement lesion is again seen, unchanged since prior scan. Associated encephalomalacia with minimal susceptibility lesions indicate postoperative changes also do not show any interval change since prior scan. The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia. About 6-7mm downward placement of cerebellar tonsils are again seen, unchanged since prior scan.Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses are clear.Bilateral mastoids show post-mastoidectomy changes with fluid collections on the left side indicating interval left mastoidectomy. No postoperative unusual finding.
1. Post left fronto parietal craniotomy status. Underlying dural thickening and enhancement on the left cerebral convexity as well as associated left frontoparietal encephalomalacia, unchanged since prior scan.2.No evidence of new abnormal enhancement. No acute ischemic or hemorrhagic lesion.3. Unchanged right mastoidectomy changes since prior scan. 4. Left side postmastoidectomy status, no postoperative unusual finding.5. Unchanged downward herniation of bilateral cerebellar tonsils.