Do you tell people you are diagnosed with emphysema? or do you just say COPD?

I do not really discuss my diagnosis with people, but if people ask I tell them emphysema... The doctors refer to it as emphysema with me.

My doctor refers to it as emphysema, but when I first received my diagnosis I was told it was just COPD without any more explanation regarding emphysema... maybe this was just unique to me. 

I don't talk about my condition often, but I feel it is quite noticeable.

@emphman I say I have one of the two forms of COPD, emphysema, the other being bronchitis, because I was stupid and smoked for 61 years.