Just a thought....did the pathologists test the lesion for Valley Fever?(Coccidioidomycosis) It is a fairly common fungus in the Southwestern U.S. and has a HORRIBLE tendency to mimic malignancies (i.e. Non-calcified nodules on CT, lights up on PET, etc.)
It is amazing how many Dr.s in other parts of the U.S. (non-endemic areas, that is) have little, or NO knowledge of this illness.
I am currently playing the "waiting game" myself, as I have non-calcified nodules in both lungs, the largest of which was only .7 x 1 centimeter in Feb. Altho' my blood test for Cocci was negative, the Pulmo's here (in AZ, where Cocci is VERY common) seem to feel there is at least as much chance of this being VF as LC. Since the largest nodule is too small for biopsy, we are doing the CT's every 3 mos. and will biopsy at the first change. Apparently, biopsy is the ONLY way to dx Cocci, in a lesion, with any certaintly.
Just my two cents...My prayers will be with you, and your Dr.'s that they will have the wisdom to figure this out! The waiting/wondering certainly takes it's toll.