How would you approach the management of a patient with metastatic non‑small cell lung cancer who previously received whole brain radiation therapy three years ago and now presents with 20 new brain metastases on MRI?

How aggressive I would be depends on KPS (which sounds to be good in this case), the patient's extracranial disease status (which sounds to be controlled on current therapy in this case), plans from a systemic therapy perspective (will the patient continue on the same therapy and what was the patien...