Male, 63 years old, with history of metastatic endocrine adenocarcinoma, status post brain metastasis resection and stereotactic radiosurgery. A resection cavity is redemonstrated in the right anterior temporal lobe which has cleared of blood product and debris when compared to the immediate postoperative study. Encephalomalacia and T2 hyperintensity along the margin of the cavity is within expected postoperative limits. A band of enhancement along the posterior resection cavity margin seen on the prior examination has diminished in thickness with development of mild intrinsic T1 hyperintensity in the same area.No new areas of parenchymal signal abnormality or pathologic parenchymal enhancement are detected. A few scattered nonspecific foci of T2 hyperintensity within both hemispheres are unchanged. No edema or mass effect is observed. No new abnormal collections are detected. Apart from mild ex vacuo dilatation of the right temporal horn, the ventricular system is stable and normal in size.
1.Findings are redemonstrated compatible with tumor resection from the right anterior temporal lobe.2.A band of enhancement along the posterior cavity margin first noted on the prior examination has diminished in thickness likely representing expected evolution of postoperative change.3.No additional intracranial lesions are seen.