Brief Answer:
Any enlargement of
lymph nodes is called adenopath
Detailed Answer:
Any enlargement of lymph nodes is called adenopathy. Yes, probably your
radiologist means that it is a calcified lymph node which is not enlarged.
A calcified lymph node often means a healed lesion. Yes, it is possible that you had the infection without your knowledge and because of good immunity, it got healed by itself. Though TB is not so common in developed countries but
histoplasmosis is known there.
A calcified lymph node may also indicate sarcoidosis-a type of interstitial lung disease beside some more conditions. In sarcoidosis, you may have only lymph node enlargement which may or may not be calcified and no interstitial findings at the time of presentation.
Yes, generally based on chest xray and CT findings it is possible to tell about
COPD.
I am of the opinion that in your case, since you have no symptoms and it`s only an accidental finding, nothing more needs to be done. In any case even if a diagnosis of sarcoidosis is arrived at, no treatment is required at present as you are asymptomatic.
However, as said before, you may consult a local pulmonologist.