Great advice!
I just talked to him about this, he had a breathing test a couple of years ago and had no problems then but since he was an automotive machinist for several years with all the garbage floating in the air, that just might be a direction to take.
He said they just did a lung xray and his lungs were clean, would emphasima not show up?
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It would not show up in an x-ray.
A CT scan will show emphysema, as it is the aveoli (air-sacs)
which need to be shown/examined.
It showed a very mild case in mine, but I do have COPD.
Evidently not because my lung x-ray didn't show anything. I had a breathing test several years back also and for my age they said it was really quite good. But this one showed I was having difficulty. It seemed to come on these last couple of years.