Dr. Charlotte Cunningham-Rundles is a leading researcher on Common Variable Immunodeficiency. The article that was sent to me, was amazing. Confusing as the woman is obviously slightly genius-y. Of particular interest, for me anyways, is the section on Chronic Lung Disease and Granulomatous/lymphoid infiltrative disease.
I hope this helps someone to understand. It is so hard to find information out there that isn't, well, repetitive.