This is one of the articles that I found online about light chain amyloidosis: http://cjasn.asnjournals.org/content/1/6/1331.full. It does not mention anything about lungs. And it seems to suggest that this is a rare disease (affecting 5-12 people per million each year). This publication by NIH does not mention lungs either: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3228694/. So I doubt most of us in this group is suffering from this disease. For those who are already feeling anxious and panicky, I hope this will not further frighten you for no reason. If you are really concerned about it, mention it to your doctors at your next appointment to see what they think.