My brother had a lung transplant a year ago. He didn't have lung cancer, but he had COPD and emphysema so badly he could not live long unless something was done. His recuperation hasn't gone the way he would like, as the anti-rejection drugs have messed with his stomach and left him trembly. He doesn't see it from my perspective; he can walk around a bit while before he needed his scooter all the time, he isn't coughing constantly, his voice is much stronger.
The man who donated his lung will be in my prayers always.