Pneumothorax

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Definition

A lung can collapse for many reasons: a growing tumor blocking a major airway, an infection, even an inhaled foreign object. One type of lung collapse, known medically as a pneumothorax, occurs when air leaks into the area between your lungs and chest wall (pleural space). The pressure of the air against the lung causes it to give way, often leading to mild to severe chest pain and shortness of breath. A pneumothorax can be caused by a chest injury, certain medical treatments, lung disease or a break in an air blister on the lung's surface.

A lung collapses in proportion to the amount of air that leaks into your chest cavity. Although the entire lung can collapse, a partial collapse is much more common. A small, uncomplicated pneumothorax may heal on its own in a week or two, but when the pneumothorax is more severe, the excess air is usually removed by inserting a tube or needle between your ribs into the pleural space.

If air continues to build up, the increasing pressure can push your heart and blood vessels toward the uncollapsed lung, compressing both your lung and heart. Called a tension pneumothorax, this condition is life-threatening and requires immediate medical care.

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Symptoms