As a last resort, surgery may be recommended for people with more severe cases of C.O.P.D. A common surgical option is lung volume reduction surgery, in which small areas of damaged lung tissue are removed. After this operation, the diaphragm will be able to contract more easily, allowing an improvement in the air flow to the lungs. In the most severe cases, it may be necessary for a patient to undergo a complete lung transplant operation. Remember, not every treatment or medication is right for everyone. Its important to discuss the pros and cons of every option with your doctor, and to follow your physicians instructions exactly.