Female, 65 years old, with GBM, currently off all therapy, status post surgery, RT/TMZ. Findings are redemonstrated compatible with prior left frontal craniotomy and left frontal lobe tumor resection. The mildly hemosiderin stained resection bed has not significantly changed in size or morphology. On postcontrast images, no pathologic enhancement is seen within the operative region. In addition, a small focus of enhancement within the right superior frontal gyrus, seen on prior examinations, is no longer visualized.Ill-defined white matter T2 hyperintensity within the frontal lobes, left side more than right, has progressed from prior examinations. However, there are no areas of masslike signal abnormality, and no mass effect is detected.A few scattered foci of white matter T2 hyperintensity elsewhere in the cerebral hemispheres are nonspecific and unchanged. No pathologic intracranial enhancement is seen. No abnormal extra-axial fluid collections are detected. The ventricular system is stable in size and morphology. A left maxillary mucus retention cyst is unchanged.
1.Stable appearing left frontal lobe surgical bed with no evidence of suspicious enhancement or mass effect.2.Progressive ill-defined frontal lobe white matter signal abnormality which likely represents a treatment related effect.3.The previously noted focus of enhancement in the right superior frontal gyrus is no longer visualized.