Sooo my Dad had a PET scan after several rounds of Opdivo and it looks as though the disease is progressing with some new disease noted in the report. Going back on chemo is an option, just unfortunate as it really takes a toll on him and he's had such an "active" few months while getting the Opdivo infusions, and has even gained back some weight...
Talk a about a rock and a hard place...but he's a fighter and whatever the doctors suggest we trust they are doing right by him....
Love you dad scottcharlop