History of lung cancer status post chemoradiation therapy for followup. There is no intracranial mass or mass effect. There is no abnormal parenchymal or meningeal enhancement. Multiple foci of susceptibility artifact, including the left periatrial region, right pons, and right frontal operculum, are consistent with hemosiderin deposition from chronic microhemorrhages are unchanged. Previously described 2 mm lesion with susceptibility effect and possible enhancement does not demonstrate enhancement on the current study and may have been artifactual. There are scattered punctate foci of abnormal T2/FLAIR hyperintensity within the periventricular and subcortical white matter, consistent with mild chronic small vessel ischemic changes. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. Again seen is nonspecific left falcine calcification. There is a left frontal developmental venous anomaly. The skull and extracranial soft tissues are unremarkable.
1. No convincing evidence of intracranial metastatic disease on the current study. 2. There are unchanged punctate foci of susceptibility effect, including in the left periatrial region, right lateral pons, and right frontal operculum, which are consistent with chronic microhemorrhages and nonspecific in etiology. Enhancement questioned with one of the lesions on the prior study is no longer appreciated and may have been artifactual versus represent treatment response.3. Mild chronic small vessel ischemic changes. 