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Asbestosis

Pulmonary fibrosis - from asbestos exposure; Interstitial pneumonitis - from asbestos exposure

Asbestosis is a lung disease that occurs from breathing in asbestos fibers.

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Causes

Breathing in asbestos fibers can cause scar tissue (fibrosis) to form inside the lung. Scarred lung tissue does not expand and contract normally.

How severe the disease is depends on how long the person was exposed to asbestos and the amount that was breathed in. Often, the symptoms aren't noticed for 20 years or more after the asbestos exposure.

Asbestos fibers were commonly used in construction before 1975. Asbestos exposure occurred in asbestos mining and milling, construction, fireproofing, and other industries. Families of asbestos workers can also be exposed from particles brought home on the worker's clothing.

Other asbestos-related diseases include:

Workers today are less likely to get asbestos-related diseases because of government regulations.

Cigarette smoking increases the risk of developing asbestos-related diseases.

Symptoms

Symptoms may include any of the following:

Possible other symptoms include:

Exams and Tests

The health care provider will perform a physical exam and ask about the symptoms. 

When listening to the chest with a stethoscope, the provider may hear crackling sounds called rales.

These tests may help diagnose the disease:

Treatment

There is no cure. Stopping exposure to asbestos is essential. To ease symptoms, drainage and chest percussion can help remove fluids from the lungs.

The doctor may prescribe aerosol medicines to thin lung fluids. People with this condition may need to receive oxygen by mask or by a plastic piece that fits into the nostrils. Certain people may need a lung transplant.

Support Groups

You can ease the stress of this illness by joining a lung support group. Sharing with others who have common experiences and problems can help you not feel alone.

These resources can provide more information on asbestosis:

Outlook (Prognosis)

Outcome depends on the amount of asbestos you were exposed to and how long you were exposed.

People who develop malignant mesothelioma tend to have a poor outcome.

When to Contact a Medical Professional

Call your provider if you suspect that you have been exposed to asbestos and you have breathing problems. Having asbestosis makes it easier for you to develop lung infections. Talk to your provider about getting the flu and pneumonia vaccines.

If you've been diagnosed with asbestosis, call your provider right away if you develop a cough, shortness of breath, fever, or other signs of a lung infection, especially if you think you have the flu. Since your lungs are already damaged, it's very important to have the infection treated right away. This will prevent breathing problems from becoming severe, as well as further damage to your lungs.

Prevention

In people who have been exposed to asbestos for more than 10 years, screening with a chest x-ray every 3 to 5 years may detect asbestos-related diseases early. Stopping cigarette smoking can greatly reduce the risk of asbestos-related lung cancer.

Related Information

Respiratory
Malignant mesothelioma
Pleural effusion
Interstitial lung disease - adults - discharge

References

Cowie RL, Becklake MR. Pneumoconioses. In: Broaddus VC, Mason RJ, Ernst JD, et al, eds. Murray and Nadel's Textbook of Respiratory Medicine. 6th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 73.

Tarlo SM. Occupational lung disease. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 93.

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Review Date: 5/21/2017  

Reviewed By: Denis Hadjiliadis, MD, MHS, Paul F. Harron, Jr. Associate Professor of Medicine, Pulmonary, Allergy, and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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