If any of your nodes are involved @Joarden .... even if by 1 cell ... it may have escaped into your body .... So the chemo is to mop up randoms that may have escaped. My husband had 50 nodes removed and tested, and cancer was found in just one of them. He didn’t want to have chemo, but he did, as the safe option. 10 years later he is still here, even tho 70% usually don’t make it to 5 years for his type of cancer. He had most of his stomach removed.
You say 7 of 10 nodes were ‘a concern’ .... have you seen the pathology report? Were they positive?
Your Onc will take you thru all the options
Take care xxx