At this point, the patient is lost to surgery, and the primary goal of treatment is to limit tumor progression.
The specific treatment options are local radiotherapy, which is more difficult to reach the brain because of the blood-brain barrier, and local radiotherapy, and local excision of metastases. Finally, there is a third-generation targeted drug, Ocitinib, which has a good effect on patients with advanced brain metastases from lung adenocarcinoma.