What are some interesting facts about lung transplants?

Lung transplants are not very common, and most lung transplant patients are between ages 18 and 65, according to the National Heart, Lung and Blood Institute. The patient can receive one or two lungs during the transplant.

A living person can donate part of his lung, according to the NHLBI. This is called a living donor lobar lung transplant. In this procedure, an adult donor gives up a lobe of his lung to a patient, who is usually a child.

Patients who are eligible for lung transplants are deemed to have one or two years to live if they don't receive a donated lung, says MedlinePlus.