14-year-old with history of GBM, currently on maintenance chemotherapy with Temozolomide. Compared to 3/10/2015, there has been evolution of postsurgical changes related to left parietal craniotomy for tumor re-resection. There is no significant change in appearance of the left parietal resection cavity and cystic areas adjacent to the trigone of the left lateral ventricle. No significant change in surrounding T2/FLAIR hyperintensity. No significant change in the enhancement along the posterior medial margin of the resection cavity as well as a 7 mm nodular focus of enhancement abutting the trigone of the left lateral ventricle.There is a nodular focus of extra-axial enhancement along the lateral aspect of the left anterior temporal convexity which is more prominent than prior and may be be vascular in etiology, attention on follow-up suggested. Left anterior temporal arachnoid cyst incidentally noted and unchanged. Interval decrease in extra-axial collection along the left cerebral convexity with increased dural enhancement which is likely reactive. No evidence of infarct. No new mass effect. No midline shift or herniation. No hydrocephalus.
1. Compared to 3/10/2015, there is no evidence of tumor progression. No significant change in appearance of the left parietal resection cavity, cystic areas adjacent to the trigone of the left lateral ventricle, enhancement along the posterior medial margin of the resection cavity, as well as nodular focus of enhancement abutting the trigone of the left lateral ventricle.2. Nodular focus of extra-axial enhancement along the lateral aspect of the left anterior temporal convexity is more prominent than prior and may be be vascular in etiology, attention on follow-up suggested.