Female, 87 years old, with breast cancer metastatic to the brain, SRS planning scan. A cortically based lesion within the left precentral gyrus is again demonstrated. Without contrast, assessment for interval change in lesional size is not reliable although the lesion does appear somewhat flatter. However, the associated parenchymal edema has increased slightly when careful comparison is made. Similarly, the size of a small cortically based tumor within the right postcentral gyrus is not accurately assessed, but associated edema has very slightly increased. A third known metastatic lesion within the right basal ganglia is not well visualized.
Although the sizes of cortically based metastases in the left precentral and right postcentral gyri are difficult to assess without contrast, associated parenchymal edema has mildly increased in both cases. A third known metastasis in the right basal ganglia is not well visualized.