NSCLC brain metastases status post WBRT in 11/2014. There is interval decrease in size of multiple subcentimeter enhancing supratentorial and infratentorial lesions. For example, a right anterior frontal lobe lesion measures up to 4 mm, previously 8 mm and a left cerebellar hemisphere lesion measures up to 3 mm, previously 5 mm. There is also negligible residual vasogenic edema associated with the lesions. There is a punctate focus of susceptibility effect in a left precentral gyrus lesion, which may represent hemorrhage or calcification. In addition, the enhancing component within the pineal gland has decreased in size. There is minimal patchy cerebral white matter T2 hyperintensity. There is no evidence of intracranial hemorrhage 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 skull, paranasal sinuses, and scalp soft tissues are unremarkable. There is patchy fluid signal within the bilateral mastoid air cells.
Interval decrease in size of multiple subcentimeter enhancing supratentorial and infratentorial metastases. 