Also called Spontaneous pneumothorax, is a collection of air or gas in the chest that causes the lung to collapse. Spontaneous means there is no traumatic injury to the chest or lung.
Causes, incidence, and risk factors
There are two types of spontaneous pneumothorax:
Primary spontaneous pneumothorax Secondary spontaneous pneumothorax Primary spontaneous pneumothorax occurs in people without lung disease. It usually occurs in tall, thin men between the ages of 20 and 40. Usually, the rupture of a small air- or fluid-filled sac in the lung (called a bulla) causes a primary spontaneous pneumothorax.
Secondary spontaneous pneumothorax most often occurs with chronic obstructive pulmonary disease (COPD). Other lung diseases commonly associated with spontaneous pneumothorax include:
Tuberculosis Pneumonia Asthma Cystic fibrosis Lung cancer Interstitial lung disease