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Definition Return to top
Spontaneous pneumothorax is a collection of air or gas in the chest that causes the lung to collapse (see also pneumothorax) in the absence of a traumatic injury to the chest or lung.Causes, incidence, and risk factors Return to top
A primary spontaneous pneumothorax occurs in a person with no known lung disease. It affects between 8,000 and 9,000 persons in the USA each year, usually tall, thin men between 20 and 40 years old.
Usually, the rupture of a small bleb or bulla (an air- or fluid-filled sac in the lung) causes primary spontaneous pneumothorax. Secondary spontaneous pneumothorax occurs in the setting of known lung disease, most often chronic obstructive pulmonary disease (COPD).
Other lung diseases commonly associated with spontaneous pneumothorax include: tuberculosis, pneumonia, asthma, cystic fibrosis, lung cancer, and certain forms of interstitial lung disease.
Symptoms Return to top
Signs and tests Return to top
Listening to the chest with a stethoscope (auscultation) during a physical examination reveals decreased breath sounds.Treatment Return to top
The objective of treatment is to remove the air from the pleural space, allowing the lung to re-expand. Small pneumothoraces may resolve on their own.Expectations (prognosis) Return to top
Between 30-50% of patients with spontaneous pneumothorax experience recurrence, but there are no long-term complications following successful therapy.Complications Return to top
Spontaneous pneumothorax can recur.Calling your health care provider Return to top
Call your health care provider if severe shortness of breath develops.Prevention Return to top
Stopping smoking will decrease the risk of developing severe lung disease that may lead to pneumothorax. Controlling lung diseases such as asthma may lower the risk of pneumothorax. Update Date: 1/27/2004 Updated by: Allen J. Blaivas, D.O., Division of Pulmonary, Critical Care, and Sleep Medicine, University Hospital, Newark, NJ. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |