 There are postoperative findings related to left parietal craniotomy for subjacent tumor resection. There is unchanged susceptibility effect within the adjacent resection cavity as well as an additional punctate focus within the right parietal lobe. There is perhaps slight decrease in the extent of confluent T2 hyperintensity adjacent to the resection cavity, as well as scattered additional small foci of T2 hyperintensity throughout the supratentorial white matter. A small focus within the right parietal lobe also appears to have slightly decreased in size. There is minimal thin linear enhancement adjacent to the resection cavity that has decreased progressively compared with the prior 2 exams (the November exam was performed on a 3T magnet and the September exam was performed on a 1.5T magnet). There is no evidence of significantly elevated relative cerebral blood volume within the enhancing or nonenhancing regions. There is no evidence of acute infarct. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact.
Decreased size of the left parietal glioblastoma, which may be represent true partial response or perhaps pseudo-response secondary to Avastin. I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.