Benign neoplasm of brain, unspecified [D33.2], Reason for Study: ^Reason: follow up meningioma resection History: routine imaging following meningioma resection. Post left fronto temporal craniotomy status.Rim enhancing lesions on the left middle cranial fossa with restricted diffusion are again demonstrated. Measured size of each lesion on Gad enhanced axial scan are 14mm x 12mm and 9.9mm x 10.7mm, certainly there is no evidence of growth but no significant interval change since prior scan. Diagnostic possibilities include organized blood products, post-operative changes and the possibility of residual or regrowth of tumor is less likely. High signal intensity lesion on FLAIR/T2 at the right cingulate gyrus with subtle enhancement most evident on sagittal post enhancement scan appears to be stable, no change since prior scan.Encephalomalacia of the left lateral orbital gyrus and the left temporal lobe tip also appear to be stable, no change since prior scan. The ventricles, sulci and cisterns are symmetric and unremarkable. There is no evidence of acute ischemic or hemorrhagic lesion. 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. Re-demonstration of the left middle cranial fossa rim enhancing lesions. No significant interval change of their size and MR signal characteristics since prior scan. Differential diagnosis include organizing and evolving hematoma, postoperative changes. Possibility of residual or regrowth of tumor would be slim.2. No change of FLAIR/T2 high signal intensity lesion with subtle enhancement on the right cingulate gyrus since prior scan.3. No change of left lateral orbital gyrus and left temporal tip encephalomalacia since prior scan.4. No evidence of acute ischemic or hemorrhagic lesion. 