Headache after craniotomy for tumor resection. There are interval postoperative findings related to left temporal craniotomy with areas of restricted diffusion along the margins of the resection cavity and blood products in the surgical cavity and overlying scalp swelling. There is also linear enhancement along the anterior aspect of the resection cavity and confluent areas of high T2 signal in the surrounding white matter. The ventricles and basal cisterns are unchanged in size and configuration. There is no significant midline shift or herniation. The major cerebral flow voids are intact. The orbits are grossly unremarkable.
Postoperative findings in the left temporal lobe with nonspecific linear enhancement along the anterior aspect of the resection cavity that may represent residual tumor or treatment effects and confluent areas of high T2 signal in the surrounding white matter that may represent edema superimposed upon mild ischemic changes along the surgical cavity margins. 