That is the report from the PET scan. Sorry to see that he’s going through this, it’s so difficult.
The doctor should order testing on a sample of his cancerous tissue, lymph node fluid, or even just blood. That can be analyzed to determine what’s driving the cancer, it’s generally called “biomarker testing”. Many hospitals won’t do this analysis in their own lab, it often gets sent to an off site lab, and can take a couple of weeks for the results to come back. So maybe it’s just not ready yet. It can be critical in guiding treatment decisions, in my opinion.
I’m a patient, but don’t have a formal clinical background, that’s my disclaimer. : )
Take care, Lisa
https://lcfamerica.org/lung-cancer-info/diagnosis/biomarker-testing/

@mrose1717, please note that I removed the test results attached with your message. Connect is a public forum. If you wish to post test results, please make sure that personal identifying information is removed, such as patient name, identification number, address, hospital etc. This is to ensure patient privacy and security.

Did your dad ask about bio-marker testing?