Chemotherapy before or after surgery

sandwich2000

Hi, I am new here. My father was recently diagnosed with NSCLC. It’s at least stage 2b. We have seen two oncologists in Northern Virginia. One suggested to have surgery now and do systemic treatment after. The other oncologist suggested chemo and immunotherapy before the surgery. Given my dad is 80 and qualify of life is most important factor to concern, I am thinking to go with surgery first. I am scared that I will lose him and also scared that I am making wrong decision for him. Any help please? Thank you!