Male, 71 years old, history of esophageal cancer and brain metastases, status post drainage of cyst, status post radiosurgery. A left posterior parietal burr hole is redemonstrated. Subjacent to this, there remains an ill-defined heterogeneous lesion at the site of prior rim enhancement. Accurate sizing of this lesion is not possible given lack of IV contrast. However, the degree of surrounding parenchymal T2 hyperintensity has increased, now covering a wider geographic area involving the left parietal and occipital lobes, and with a greater degree of associated sulcal effacement.The known small right cerebellar lesion is vaguely identified as a region of ill-defined T2 hyperintensity. No other significant interval changes are detected. The ventricular size and morphology are approximately unchanged.
1.Limited precontrast examination of the brain. 2.Although accurate sizing of the dominant left parieto-occipital lesion is not possible, the degree of edema surrounding this lesion has increased. 3.A small lesion in the right cerebellum is vaguely discernible.