69-year-old male with lung cancer and brain metastasis treated via SRS. There is a punctate focus of susceptibility effect in the left cerebellar hemisphere, which is not conspicuous on the T1 or T2 weighted sequences. Punctate foci of susceptibility are also present in the right thalamus and right putamen, which are unchanged. There is unchanged moderate periventricular and subcortical white matter punctate T2 hyperintense foci, compatible with chronic small vessel ischemic disease. There is no evidence of acute intracranial hemorrhage, new mass, or acute infarct. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unchanged.
Limited exam due to lack of intravenous contrast shows a punctate treated lesion in the left cerebellar hemisphere and unchanged nonspecific scattered cerebral white matter disease. 