black spots

So my husband finally went to the doctor. After 6 months of me badgering him, he relented.
Of course this was not until he was coughing up blood.
The doctor did an x-ray and found a black spot on his lungs. The spot is round, which is promising from what I understand (i am by no means a medical professional). From what I gather a round spot is likely to indicate an infection that the body is trying to contain, while a spot that has branches showes spreading.
A fast pack of antibiotics with an additional antibiotic is what he was given. Plus another x-ray after two weeks.
Afghanistan has no EPA (Enviromental Protection Agency). They have no standards and there is a lot of concern for our sailors, soldiers, and airmen over there as indicated by this exerpt from the Veterans Benefits Administration:
(VBA) Training Letter 10-03, the VBA noted that such "burn
pits" are located at "every location wherein the military has
positioned a forward operating base (FOB)." The Training Letter
goes on to discusses the type and concentration of particulate
matter generated by these "burn pits" and recommends that
"because of the widespread nature of the burn pits, and the
inability of military personnel records to identify all duty
locations, the Veteran's lay statement of burn pit exposure
generally will be sufficient to establish the occurrence of such
exposure if the Veteran served in Iraq, Afghanistan, or
Djibouti." In consideration of the recommendations made in VBA
Training Letter 10-03, the Board finds that the Veteran was
exposed to fumes generated by a "burn pit" as a result of the
time, place, and circumstances of his Afghanistan service.
38 U.S.C.A. § 1154(a).

And a leaked Army Memo said exposure could lead to long term respritory problems. http://www.military.com/daily-news/2012/05/22/memo-afghan-burn-pit-could-wreck-hearts-lungs.html.

So now we wait.............................