Small cell lung cancer with previously radiated brain metastases. There is no evidence of intracranial hemorrhage or acute infarct. There are unchanged nonspecific scattered foci of cerebral white matter T2 hyperintensity without associated enhancement or restricted diffusion. There is no definite residual abnormal intracranial enhancement. 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, orbits, and scalp soft tissues are unremarkable. However, there is persistent fluid within the bilateral mastoid air cells. There is also scattered paranasal sinus mucosal thickening.
No discernible residual enhancing brain metastases.