Lung Cavity wall thickens

[bluesalad]

I am trying to decide (with consultation of multiple doctors) whether to take out a 2cm cavity in my upper left lobe. I've had this cavity for almost 3 years. It was due to Valley Fever and I have been getting treatment (still on meds) ever since.  Comparing the CT of when I was first diagnosed, to the most recent CT, the size of the nodule has not changed, but it looks really different.  The previous CT shows a very thin walled cavity with lesion (thus the coughing blood symtoms I had), now the cavity has a much thicker wall and nothing in the middle. My question is, what does it mean when the cavity wall thickens? is this the same as scarring? Can the cocci fungus grow in the thickened cavity wall?
Your insight is much appreciated. thank you.

[National Jewish Health]

Coccidiomycosis, the fungus that causes valley fever, can grow in the thickened cavity wall and that growth can be manifest as wall thickening.  Thus the wall thickening could reflect non-infectious inflammation or scarring, growth of Coccidiomycosis, or a combination of the two.  Bronchoscopy is a reasonable first approach.  One cannot assume that this cavity does not contain Coccidiomycosis.