emphysema as "additional findings" after lobectomy

I am recovering well from my rt lower lobectomy even tho I have numbness under breasts and nerve pain along ribs that were cut thru for a RAT surgery. I just found the pathology report and in the "additonal finding", I see "emphysema. The oncologist I saw post op did not mention it nor did the thoracic surgeon who completed the lobectomy. I'm curious to know if anyone knows what this means, or if anyone else has this "additional finding" on their report? I have zero symptoms at this point and wonder how they found it and what it means?