Male, 34 years old, with GBM status post re-resection. Evidence of re-resection of the patient's left frontal lobe tumor is seen. The resection cavity has been expanded and contains predominantly FLAIR hypointense fluid. An oval collection of blood product is evident along the floor of the resection cavity which appears to be intraparenchymal but which probably represents clot within the prior cystic cavity in this location. The previously described, slowly progressive soft tissue thickening along the margins of the original resection cavity has been debulked. This includes a majority of the irregular enhancing tissue which was particularly prominent along the inferior margin of the cavity. Some irregular enhancing tissue does remain along the posterior aspect of the cavity with extension into the genu of the corpus callosum appearing similar to prior.The degree of T2 signal abnormality surrounding the resection cavity appears geographically similar to that on the preoperative examination. Ill-defined periventricular FLAIR hyperintensity is unchanged. No new parenchymal lesions are identified. The ventricles are stable and normal in size.
Expected findings are seen status post debulking of the patient's left frontal lobe tumor. A small amount of residual tumor is seen mostly along the posterior resection margin with invasion of the genu of the corpus callosum appearing similar to the preoperative examination.