Male, 51 years old, with abnormal brain MRI. Evaluate brain lesion status post nondiagnostic brain biopsy. Evidence of prior biopsy is again seen in the right cerebral hemisphere. A small hemosiderin stained cavity involving the right basal ganglia is unchanged.Ill-defined T2 hyperintense signal and thickening are again seen involving the right temporal lobe, insula, basal ganglia, thalamus, cerebral peduncle and centrum semiovale. No significant interval change is seen in the geographic extent of this abnormality or in the degree of parenchymal thickening, even when compared to multiple prior studies. There is no associated diffusion restriction, and no pathologic enhancement.Generalized right cerebral mass effect with slight midline shift to the left and partial effacement of the right lateral ventricle is unchanged. No evidence of acute intracranial hemorrhage is seen. Ventricular size and morphology are unchanged.
No change is seen in the extent of signal abnormality and parenchymal thickening involving a substantial portion of the right cerebral hemisphere. No new intracranial lesions are detected. Findings related to prior right cerebral biopsy are redemonstrated.