Clinical question: Evaluate left brain lesion status post resection. Signs and symptoms: Same. Pre-and post-enhanced brain MRI:Examination is to status post left temporal craniotomy for removal of tumor. A serosanguineous fluid surgical cavity superficially in the left inferior gyrus of temporal lobe measures at approximately 17 times 15-mm in size. It demonstrates a thin rim of expected restricted diffusion along its wall. Very subtle surrounding parenchymal flair/T2 hyperintensity consistent with edema which results in very subtle effacement of adjacent cortical sulci is present.On T1-weighted images the lesion demonstrates a thin band of T1 hyperintensity consistent with blood product. This however precludes precise assessment for presence of enhancement. Within this limitation however there is no detectable enhancement on post introduced series. Further follow-up is needed to entirely exclude possibility of residual tumor.Unremarkable pre-and post enhanced brain MRI otherwise.
1.Expected postoperative changes of the left inferior temporal gyrus tumor resection without convincing evidence of residual on this initial exam. However presence of blood product at the surgical site can obscure small residual tumor. Further follow-up is needed.2.Unremarkable pre-and post enhanced exam otherwise.