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How is chest X-ray used to diagnose asthma?

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An X-ray of your lungs can help your doctor rule out other health conditions that may be behind your asthma-like symptoms. Asthma may cause a small increase in the size of your lungs (called hyperinflation), but a person with asthma will usually have a normal chest X-ray. A chest X-ray can also make sure you don't have pneumonia or lung cancer, particularly in smokers.

SOURCES: National Institutes of Health web site: "Asthma." American Academy of Allergy, Asthma, and Immunology web site: "Patient Gallery: Other diseases related to asthma."  National Asthma Education and Prevention Program: "Considerations for Diagnosing and Managing Asthma in the Elderly" and "Guidelines for the Diagnosis and Management of Asthma." American Lung Association web site: "Asthma in Adults Fact Sheet."



Reviewed by Carol DerSarkissian on February 28, 2018

SOURCES: National Institutes of Health web site: "Asthma." American Academy of Allergy, Asthma, and Immunology web site: "Patient Gallery: Other diseases related to asthma."  National Asthma Education and Prevention Program: "Considerations for Diagnosing and Managing Asthma in the Elderly" and "Guidelines for the Diagnosis and Management of Asthma." American Lung Association web site: "Asthma in Adults Fact Sheet."



Reviewed by Carol DerSarkissian on February 28, 2018

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