Try not to worry. I had one of the most horrendous pre-op episodes, not that I'm trying to out do you, Diane. After my PCP talked to me, listened to my heart, etc., he said let's look at your lung x-Ray. We proceed to his office, he pulls the x-rays up on his computer, makes a FACE, gritting his teeth in a grimace, then says, "that could be a cancer. I want you to have a CAT scan."
I was in such shock, I nodded my head, got in the car and wept the whole way to school. All I could think was I'll never have the TKR because now I have to have a lung removed. This was major scary for me as all I had ever experienced medically was testing for Hashimoto's, now I need a TKR and a lung removed with possible chemo and/or radiation. I prayed during the days before the CAT scan and figured maybe they could take part of my lung, I'm not a runner I'd be ok. I didn't tell my family because I didn't want to worry them. Well, they said it was scar tissue from a broken rib, I never had a broken rib. I keep saying I need to find a new PCP because I thought he handled that very poorly.
I know you've dealt with some serious medical issues, but I'm sure this will all work out before the TKR.