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Respiratory system
Respiratory system


Definition:

Pulmonary alveolar proteinosis is a rare disease in which a type of protein builds up in the air sacs (alveoli) of the lungs, making breathing difficult.



Alternative Names:

Alveolar proteinosis



Causes, incidence, and risk factors:

In some cases, the cause of pulmonary alveolar proteinosis is unknown. In others, it is associated with infection or an immune problem. It also can occur with cancers of the blood system, and after exposure to high levels of dust.

This rare disorder generally affects people 30 - 50 years old and is seen in men more often than in women. A form of the disorder is present at birth (congenital).



Symptoms: There may be no symptoms.

Signs and tests:

The doctor may hear crackles in the lungs. Often, the physical examination is normal.

The following tests may be done:



Treatment:

Treatment consists of periodically washing out the protein substance from the lung (whole-lung lavage). A lung transplant may be recommended for certain patients with this disease.

Recently, experimental data have showed some improvement with treatment using a blood-stimulating medication, which is known to be deficient in some patients who develop alveolar proteinosis.



Support Groups:



Expectations (prognosis):

Some people with this condition go into remission. Others develop worsening respiratory failure.



Complications:



Calling your health care provider:

Call your health care provider if you develop symptoms. Progressively worsening shortness of breath may signal that your condition is developing into a more serious medical emergency.



Prevention:



References:

Mason RJ, Broaddus VC, Murray JF, Nadel, JA. Murray and Nadel's Textbook of Respiratory Medicine. 4th ed. Philadelphia, Pa: WB Saunders; 2005.

Levine SM. Alveolar filling disorders. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier;2007:chap 91.




Review Date: 5/21/2009
Reviewed By: Allen J. Blaivas, D.O., Division of Pulmonary and Critical Care Medicine, UMDNJ-New Jersey Medical School, Newark, NJ. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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Wentworth-Douglass Hospital
789 Central Avenue, Dover, NH 03820
Phone: (603) 742-5252
Toll free: 1 (877) 201-7100