48 year-old male with a right frontal WHO grade II diffuse astrocytoma. He initially presented in 2014 with seizures. He had tumor resection on 3/24/2016 and has been seizure free since surgery. The previously described extra-axial fluid collection and postsurgical pneumocephalus have resolved. The area of residual T2 hyperintense gyral thickening along the right precentral gyrus, consistent with residual tumor, has decreased in size, presumably related to the radiation therapy. The resection cavity has largely cleared, and the fluid within it is now nearly completely FLAIR suppressing. Ill-defined T2/FLAIR hyperattenuation along the medial aspect of the resection cavity is nonspecific. Thin, discontinuous enhancement along the margin of the resection cavity most likely represents postoperative change. No new mass lesion is evident. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact.
1.The area of residual T2 hyperintense gyral thickening along the right precentral gyrus, consistent with residual tumor, has decreased in size. 2.Expected resolution of acute postoperative findings, with remaining post-treatment changes as described above. 3.No new mass lesion is evident. 