Tests, Tests, and How About Another Test.

Gastric Secretion Study: the thought behind this is babies swallow what comes from the lungs. So three mornings of obtaining what might be in the stomach. He tolerated that tube remarkably well.
PPD skin test: repeated just for shits and giggles. It was positive, but I still don't find that at all amusing.
Bronchoscopy: he got put to sleep and had a camera placed down into both lungs just to  have look around. Reality TV at its best. The results weren't great and way too technical for me to want to explain, but long story short, it is consistant with tuberculosis.
CT Scan: gotta see just how big those lymph nodes are and just how bad they are closing off his right lung. Once again, all consistant with TB.

I am beginning to see a pattern here.

Sweat test: we are still waiting on this one, but basically it tests for cystic fibrosis. Four lung infections in one year makes for a very uncool picture.
Blood: Lots of tests pending here. Cultures from the stomach and lung. Immune studies, ect, ect.