Lung cancer to brain s/p SRS to the left cerebellum. There is unchanged susceptibility effect in the left cerebellar hemisphere without associated enhancement. Nonspecific punctate foci of susceptibility weighted image signal loss in the periventricular white matter are also unchanged. There is no evidence of intracranial hemorrhage or acute infarct. There are mild scattered nonspecific foci of non-enhancing T2 hyperintensity in the cerebral white matter. There is a tiny focus of encephalomalacia in the right cerebellar hemisphere. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable. There is fluid or mucosal thickening within the right mastoid air cells. There is fluid and mucosal thickening in the right maxillary sinus.
1. Stable treated left cerebellar hemisphere metastases, without evidence of new intracranial metastases.2. Findings suggestive of acute right maxillary sinusitis. 