Evaluate for residual flair signal change and for hemorrhage History: s/p right side craniotomy for resection of temporal lesion Postsurgical changes of anterior right temporal craniotomy and resection of the mesial temporal lesion. There is small amount of diffusion restriction along the posterior margin of the resection cavity compatible with cytotoxic edema and blood products. At least most of the previously seen masslike FLAIR hyperintensity has been resected. In comparison with preoperative images, however, there is a focus of FLAIR signal abnormality (series 801 image 15) involving the right medial temporal lobe adjacent to the temporal horn, which is suspicious for minimal residual lesion. The right anterior temporal resection cavity is filled with postoperative fluid/blood products which extend along the right cerebral convexity. There is parenchymal intrinsic T1 hyperintensity related to the right anterior temporal blood products without definite residual enhancement previously seen with the lesion. No midline shift or herniation. No hydrocephalus. There is edema of the overlying scalp extending to the periorbital region. There is diffuse nonspecific opacification of the bilateral mastoid air cells and paranasal sinuses.
Postsurgical changes involving the right anterior temporal lobe. There appears to be near total resection of the right temporal lesion with small focus of residual FLAIR signal abnormality involving the right medial temporal lobe adjacent to temporal horn, which may represent minimal residual tumor. 