52 years, Female, metastatic renal cell cancer status post SRS to right cerebellum. Evaluate for progression. Compared to prior post gadolinium MRI brain study dated 9/22/2015, hemorrhagic metastatic lesion involving the right cerebellar hemisphere measures 2.0 x 2.3 x 2.0 cm previously 2.0 x 2.3 x 1.9 cm. There is mild enlargement when compared to 8/14/2015.Right lateral basal ganglia/subinsular white matter is not also significantly changed measuring 5 x 5 mm similar to 5 x 5 mm on 9/22/2015. There is however mild enlargement compared to 8/14/2015.T2/FLAIR hyperintensity compatible with vasogenic edema surrounding the right cerebellar lesion is not significantly changed since 9/22/2015 and 10/17/2015. Mild vasogenic edema associated with the subinsular/lateral basal ganglia lesion appears decreased since 9/22/2015 but similar to 10/17/2015. No new enhancing lesion, mass effect, or edema is appreciated. No evidence of infarct or new hemorrhage. No hydrocephalus. No extra-axial collections. No destructive lesions within the calvarium are appreciated. There are small bilateral maxillary mucosal retention cysts.
Compared to prior post gadolinium study dated 9/22/2015, there is no significant change in size of two enhancing metastatic lesions involving the right cerebellar hemisphere and right lateral basal ganglia/subinsular white matter. No new lesions. There remains vasogenic edema surrounding the right cerebellar lesion which is not significantly changed.