My sputum was clear after 6 months, continued the recommend 12 more month, then the CT did not have "radiological clearance" so we continued another 10 months. Stopped for 6 months then symptoms came back and them up again for 12 more months. Turns out the recurrence of symptoms was not from MAC but Aspergillus. I also have cavitation, scar tissue, Bronchiectasis, COPD, emphysema and even some Alpha-1. But I get along Ok, I played 18 holes of golf yesterday in 96 degree weather.