Chronic obstructive pulmonary disease (COPD) weakens the structure of the lungs and may also damage the tiny air sacs (alveoli) in the lungs. When these air sacs break down, larger airspaces known as bullae are formed.

Bullae sometimes can become so large that they make it hard to breathe. They may also cause other problems, such as a collapsed lung or an infection in the lungs.

For some people, surgically removing the enlarged air sacs—known as a bullectomy—can help the lungs work better. This helps a person breathe more easily and be more active.

A bullectomy may be considered if the bullae:

• Are larger than one-third of a lung.
• Cause severe shortness of breath.

If a bullectomy is a treatment option, work with your doctor to decide if it's right for you.