@skm101, Yes in 2020 I was diagnosed with lung cancer. I was stage IV right away, so I did not have surgery. My lymph nodes are intact and doing their job by trying to filter out ‘bad’ cells. When they are enlarged, I can feel a slight flutter or spasm in my chest every now and then. Everyone is different, and may not experience this same sensation.
Hang in there. I hope your PET provides some answers.