Bronchiolitis obliterans organizing pneumonia

What causes bronchiolitis obliterans organizing pneumonia (BOOP)?

BOOP may be caused by a variety of factors, including viral infections, inhalation of toxic gases, drugs, connective tissue disorders, radiation therapy, cocaine, inflammatory bowl disease, and HIV infection. In many cases, the underlying cause of BOOP is unknown. These cases are called idiopathic BOOP or cryptogenic organizing pneumonia (COP).

Last updated on 05-01-20

How is bronchiolitis obliterans organizing pneumonia (BOOP) diagnosed?

BOOP is typically diagnosed by lung biopsy, although imaging tests and pulmonary function tests can also provide information for diagnosis.

Last updated on 05-01-20

How might bronchiolitis obliterans organizing pneumonia (BOOP) be treated?

Most cases of BOOP respond well to treatment with corticosteroids. If the condition is caused by a particular drug, stopping the drug can also improve a patient's condition.

Other medications reported in the medical literature to be beneficial for individuals on a case-by-case basis include: cyclophosphamide, erythromycin in the form of azithromycin, and Mycophenolate Mofetil (CellCept). More research is needed to determine the long-term safety and effectiveness of these potential treatment options for individuals with BOOP.

In rare cases, lung transplantation may be necessary for individuals with BOOP who do not respond to standard treatment options.

Last updated on 05-01-20

Where To Start

Bronchiolitis obliterans organizing pneumonia

The Web site provides further information on this topic. Click on to view the information page.

Last updated on 04-27-20

Name: American Lung Association 55 W. Wacker Drive, Suite 1150
Chicago, IL, 60601, United States
Toll Free: 1-800-548-8252 (1-800-LUNGUSA) Email: Url:

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