Benign neoplasm of cranial nerves [D33.3], Reason for Study: ^Reason: eval for tumor resection History: eval for tumor resection Previously seen large left middle cranial fossa mass appears to be removed with evidence of left fronto-temporal craniotomy.The surgical bed shows some susceptibility artifacts and extradural fluid collections which are postoperative changes. There is no evidence of mass effects from extra dural collections.There is MR evidence of minimal brain parenchymal edema or contusion at inferolateral aspect of the left temporal pole indicating postoperative changes.On post contrast images, there is thin dural enhancement around the surgical bed which indicate postoperative changes. No definitive evidence of residual mass on the surgical bed.There is no evidence of acute ischemic or hemorrhagic lesion on this scan.The left cerebral peduncle and upper pons still appear to be deformed but comparing to prior scan, the direct mass effects have been significantly relieved postoperatively.The ventricles, sulci and cisterns are symmetric and unremarkable. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. Post total resection status of the middle cranial fossa extra axial mass with significant relief of mass effects toward adjacent brain parenchyme including left cerebral peduncle, upper pons and left mesial temporal lobe.2. Postoperative changes including some blood products at surgical bed, craniotomy site extradural fluid collections and subtle brain edema on the inferolateral aspect of the left temporal lobe pole and dural enhancement. 3. No evidence of residual tumor on this scan.4. No evidence of new ischemic or hemorrhagic lesion.