Pectus excavatum is an abnormal development of the chest wall in which several ribs and the sternum grow abnormally, resulting in a caved-in, or sunken appearance. It is considered be a relatively common congenital deformity and occurs more often in males than in females. Approximately 40% of...

Bronchoscopy is a diagnostic procedure used to obtain a small amount of lung tissue and fluid samples, which are then examined under a microscope to help in diagnosing a change in your lung function.