Reason: Eval astrocytoma. Pt on TMZ. History: astrocytoma. There is redemonstration of postoperative changes of previous left frontal craniotomy for tumor resection, with slight increased posterior extent of T2/FLAIR hyperintensity along the posterior aspect of the left superior frontal gyrus abutting lateral margin of the anterior body the left lateral ventricle. There is stable ex vacuo dilatation of the left lateral ventricle.Areas of extra-axial enhancement along the surgical bed again are unchanged. Previously seen faint nodular enhancement along the margins of the resection cavity appears similar to the most recent comparison. This includes the area of subtle nodular enhancement along the anterior aspect of the resection cavity as seen on current 1203/2015.The ventricles and sulci are stable. The cisterns remain patent. There is no midline shift or mass effect. There is no diffusion abnormality. No extra-axial fluid collection is identified. Normal flow-voids are demonstrated in the major intracranial vascular structures. The midline structures and craniocervical junction are within normal limits.
1. Stable postoperative changes from previous left frontal lobe mass resection. No definite evidence of tumor recurrence or progression. Stable subtle areas of nonspecific nodular enhancement along the resection cavity margins.2. Stable extent of T2/FLAIR hyperintensity along the left superior frontal gyrus white matter extending to the left frontal horn may represent post-treatment changes.