Not to minimize your concerns, I have had a collapsed lung 2 times. The first was after a needle biopsy and the second was after a video assisted thoracotomy. They resolved very quickly. The one from the biopsy added a few extra hours in recovery for an out patient procedure. The post operative collapse resolved during my already anticipated 3 day hospital stay. It will occur more often if you were a smoker, which I was. Anyway, it sounds a lot worse than it is. I did not know a person can be on Zithromax for that long. It seems you would develop a resistance way before 1.5 years.

Glenn