@blm1007blm1007 I read a while back in a study that spontaneous clearance of MAC takes on average 2 1/2 years, so Linda’s 2 year time frame seems on point. Off the top of my head I believe the study said that in a group that had stable CT’s for three years, 38% achieved spontaneous clearance, again with average timeframe of 2.5 years. The trick of course is having a stable CT. And even then the majority don’t spontaneously clear. Still, the percentage of those with a stable CT that do clear is not insignificant.