@jr2366 and @irene5 . Beautiful advice, Irene. The only thing I would add is to get copies of all reports and scans (on disc) for your own files and then go to see an expert for a second opinion. Many local pulmonologists know very little or just basics about MAC (including my own). Take the time to go to Mayo or National Jewish. It is so important to get started in the right direction with advice from a Dr that you trust. Go to the Best! By the way, you have stumbled upon perhaps the best support group a person could dream of. Kate