Lung cancer. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is a small areas of encephalomalacia in the left thalamus. There is also a small probable perivascular space in the left subinsular region. There is mild scattered T2 hyperintensity in the cerebral white matter, as well. There is no abnormal intracranial enhancement. There is mild diffuse cerebral volume loss. 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 a small left maxillary sinus retention cyst and mild right maxillary sinus mucosal thickening.
No evidence of intracranial metastases.