When I was in my late teens, I colonized pseudomonas for the first time and had a few hospital stays. At the time, my Xrays showed that the infection was localized to my left middle lobe. My doctor wanted to remove the lobe, thinking it would get rid of the pseudomonas in my lungs. I sought a second opinion, and the second doc said it wasn't guaranteed to work, but it might help. I decided to go ahead with the surgery. I was really healthy at the time, so the recovery wasn't so bad for me.
Here are the outcomes I had: The pseudomonas was back in my cultures within a few months, so obviously it didn't eradicate it. But I also had many, many years of good health after surgery. I mean good as in years-long stretches between IV treatments until I was in my mid-30s. I'm 44 now and still hover around 55-60% FEV1. I don't really know if the surgery had anything to do with that or if I would have been just as healthy without it. (two of my brothers with CF are in their 50s, so we have "good genes.") Really no way to tell, I guess.
As a mom now, I don't know if I would make the same decision for my child. As others said, there are many more options now than there were when I was a teen. Definitely seek other opinions before agreeing to put your child through such a difficult surgery. Ask your doctor to point you to medical literature that shows that lobe removal is a good option or that there's evidence it improves health. Also, seek information about the new Vertex drugs. There are ways to get Kalydeco off label if you can find literature that says it's expected to work for your child's mutations.
Best of luck.
Martha
44 w/CF, mom to 3, no CF