Cryptogenic Organizing Pneumonia (COP) | American Lung Association

Cryptogenic Organizing Pneumonia (COP)

Cryptogenic organizing pneumonia (COP) is a rare lung condition affecting the small airways (bronchioles) and alveoli (tiny air sacs). It was previously known as idiopathic bronchiolitis obliterans with organizing pneumonia (BOOP).

Learn About Cryptogenic Organizing Pneumonia (COP)

Cryptogenic organizing pneumonia (COP) is a form of organizing pneumonia (OP) for which no specific cause is known. Although the word "pneumonia" is in the name, COP is not an infection.

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Cryptogenic Organizing Pneumonia (COP) Symptoms, Causes and Risk Factors

The cause of COP is unknown and in most cases, gradual onset of shortness of breath and dry cough are the most common symptoms. COP is usually treated with oral steroids.

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Diagnosing and Treating Cryptogenic Organizing Pneumonia (COP)

COP is usually diagnosed by ruling out other diseases. Sometimes the signs, symptoms, X-ray and biopsy findings of COP may occur as side effects of medications. It is essential to determine whether the condition is caused by a medication because stopping that treatment will help to treat the disease.

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Living with Cryptogenic Organizing Pneumonia (COP)

Most people recover from COP after weeks or months of treatment with a steroid such as prednisone, or treatment of the specific underlying cause. However in some people, the disease may progress despite treatment.

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Questions to Ask Your Doctor about Cryptogenic Organizing Pneumonia (COP)

Making notes before your visit, as well as taking along a trusted family member or friend, can help you through the first appointment with your doctor.

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This content was developed in partnership with the CHEST Foundation, the philanthropic arm of the American College of Chest Physicians.

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