Find yourself a good infectious disease doctor who will work with your pulmonologist and answer your questions. Seems to me you are missing more than part of your lung- ( not trying to be flip)- where is your ID doctor in all this?? Do you not have one? They usually work with your pulmonologist on all aspects of this. That’s your missing piece. A CT scan usually comes back with results that say it looks like such and such or is indicative of such and such. When it says it looks like an infection like mycobacterium your pulmonologist sends you to an ID doctor. I realize surgeons might want to cut something out like a bad piece of meat but gee whiz! MAC can come back. Irene5