I overheard somebody talking about mesothelioma today, or Asbestos cancer  of the lungs.  Talk about a nasty disease.  Surely, it doesn't look as bad in the pictures as, say, lung cancer caused by a lifetime of smoking.  But considering how nasty it is, and how long it can wait to strike, it's just awful.  I included a couple of pictures today for the sake of science.

Smoker's lung
 
 
Asbestos installer's lung tissue


Healthy lung