Lung cancer with EGFR mutation, on therapy, status post resection and RT. There are stable postoperative findings and encephalomalacia in the right superior temporal gyrus extending into the superior marginal gyrus adjacent and an unchanged focus of T1 hyperintensity and susceptibility effect in the right temporal lobe related to chronic blood products. There is unchanged diffuse cerebral white matter T2 hyperintensity. There is a developmental venous anomaly in the left superior frontal gyrus. Otherwise, there is no evidence of abnormal intracranial enhancement. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The ventricles and basal cisterns are unchanged in size and configuration, with evidence of diffuse cerebral volume loss. There is no midline shift or herniation. The major cerebral flow voids are grossly intact. The orbits and scalp soft tissues appear unchanged. There are left maxillary sinus retention cysts. There is a small amount of fluid within the left mastoid air cells.
Stable post-treatment findings in the brain without evidence of recurrent intracranial metastases.