Female, 55 years old, with gait instability, history of ovarian cancer with known brain metastases. Restaging exam. Image quality on most sequences is degraded by motion artifact. Within this limitation, the following observations are made. Multiple solidly enhancing and ring-enhancing lesions are again seen within the cerebellum, all of which have decreased in size. A lesion within the midbrain tegmentum has also significantly diminished in size, now measuring 12 x 8 mm, previously 17 x 11 mm.Supratentorially, a significant decrease in the size of multiple lesions is also seen. A ring-enhancing lesion in the left precuneus now measures 11 x 9 mm, previously 14 x 10 mm. Other previously seen lesions in the right parietal lobe are now barely detectable if at all.No new intracranial lesions are appreciated. Confluent ill-defined periventricular white matter T2 hyperintensity is unchanged from prior and possibly related to therapy. No evidence of significant parenchymal edema or mass effect is detected. No abnormal extra-axial collections are seen. The ventricles and sulci are mildly prominent compatible with underlying parenchymal volume loss.
Significant interval decrease in the size of numerous infratentorial and supratentorial metastatic lesions. No new metastases are detected.