Would you mind to update us on this comment.
I cannot say this is cancer; the biopsy will conclude if it is. I have seen previous infections leave the lungs terribly scarred, etc. I cannot imagine this being an active infection without symptoms and/or abnormal labs, but could be possible though.
Secondly, the concern would be that whatever this is, benign or malignant, it is dominating the lung capacity/space.
Need the biopsy ASAP.
You can also post in the Lung CA Forum as well.
Keep us posted.