Exposure to asbestos can cause not only pleural
mesothelioma and other types of cancer, but also severe scarring of the lungs
and a disease known as asbestosis. These diseases, while not cancer, still can
seriously impact the life of the victim, causing uncomfortable symptoms and
prompting the need for treatment. Some of these conditions, such as pleural
plaques and pleural effusion, are commonly present in the majority of pleural
mesothelioma cases.
Pleural Plaques and Effusion
Pleural plaques are akin to scars on the lungs, caused by collagen deposits
to the pleura. These plaques form as a result of asbestos exposure. Plaques do
not generally produce any notable symptoms. Furthermore, they are not
considered a forerunner of cancer.
According to the Centers for Disease Control, approximately 50 percent of
all individuals who were regularly exposed to asbestos develop pleural plaques.
Because they do not carry any distinct symptoms, they are often discovered
during X-rays or CT scans that are performed for some other reason or they are
detected during the routine screenings that many individuals who were exposed
to asbestos participate in on an annual basis. Even though plaques don’t
indicate cancer, the patient’s doctor may still want to order additional tests.
Asbestos exposure can also cause pleural effusion, which is the build-up of
fluid between the parietal and visceral layers of the pleura. This fluid can
cause pain and make it very difficult to breathe. If a person is found to have
fluid in the pleural area, the doctor will probably order it to be tested for
cancer cells. In addition, the fluid can be drained in order to relieve the uncomfortable
symptoms it causes.
Asbestosis
First given a name in 1928, asbestosis is a common ailment in individuals
with prolonged exposure to asbestos. It is characterized by inflammation,
scarring and severely diminished lung capacity. As with the latency period
associated with pleural mesothelioma, symptoms of this disease may take 10 to
30 years to appear, long after exposure has occurred in some cases.
The most prevalent symptom of asbestosis is pulmonary fibrosis, defined as a
scarring or thickening of the lungs. Hence, the lungs become stiffened, making
it difficult for them to expand and contract. Other symptoms of asbestosis
include:
- Shortness
of breath, especially during physical activity. Later, this shortness of
breath may expand to times of rest.
- Less
tolerance for physical activity.
- Chest pain
or discomfort
- A
phlegm-producing cough
- Clubbing of
fingers (in some cases)
Asbestosis symptoms may be easily confused with those of other more common
pulmonary ailments, including asthma. That is why misdiagnosis often occurs.
Asbestosis symptoms, however, develop over a long period of time, making it
different from many other lung-related ailments. Anyone who suspects they may
have asbestosis should inform their doctor of their history with asbestos.
How Does Asbestosis Develop?
Asbestosis occurs when an individual inhales tiny, sharp asbestos fibers.
These fibers can become lodged in the lungs and may eventually cause scarring
and stiffening. Once inhaled, asbestos fibers are difficult to dispel, and even
the body’s macrophages, which are attracted to and can ingest foreign
substances, have difficulty fighting asbestos fibers. The result is cumulative
scarring of the air sacs (alveoli) which results in difficulty breathing
because lung capacity is diminished. It will also take more muscular effort to
breathe than it would for a person with normal lungs.
Asbestosis and Asbestos Exposure
Not everyone who suffers prolonged exposure to asbestos develops asbestosis.
However, reports have shown that people who have experienced moderate to severe
asbestos exposure over a period of ten years or longer are at a significantly
higher risk for developing this and other asbestos-related diseases. Asbestos
miners are especially susceptible.
It normally takes as much as 10 years after the first exposure to asbestos
for individuals to develop asbestosis. However, in recent cases of asbestosis
among emergency workers who responded to the 9-11 attacks, it has been proven
that the disease can develop much more quickly if exposure is at intense
levels.
Smoking does not cause asbestosis but it can aggravate the condition. There
is also proof that individuals with asbestosis who smoke are much more likely
to develop lung cancer because of their smoking habit. Smoking does not increase
the risk of developing pleural mesothelioma, but it does compromise the lungs
making them more susceptible to disease.
Tests for Asbestosis
Patients who suspect they may have developed asbestosis should provide their
doctor with a thorough occupational history so that the link to asbestos
inhalation is apparent and so that the doctor can order the proper tests to
confirm or deny this diagnosis.
When first testing for asbestosis, the doctor may listen to your lungs.
Lungs affected by asbestosis often produce a particular dry, crackling sound.
However, that is not sufficient for a diagnosis. Most likely, your doctor will
order some sort of imaging test, ranging from a simply chest X-ray to a CT scan
or MRI. He may also perform a pulmonary function test to determine how well the
lungs are working.
Treatment for Asbestosis
There is no cure for asbestosis. Instead, your doctor will focus on
relieving the symptoms of the disease and making sure that it does not
progress. As was previously mentioned, it is essential for all asbestosis
victims who are smokers to stop smoking immediately. Patients may need to wear
oxygen to assist with breathing and doctors may suggest flu or pneumonia
vaccines to avoid respiratory illnesses that can cause further complications.
Blood thinning medications may also be suggested in order to prevent blood
clots from forming and obstructing already-narrowed vessels. In some cases,
lung transplant surgery may be suggested.
Complications from Asbestosis
Common complications from asbestosis include:
- Pulmonary
hypertension – high blood pressure in the lung’s arteries
- Lung
cancer– those who smoke and have asbestosis are at a higher risk for
cancer development.
- Pleural
Mesothelioma – the cancer has been known to develop in those with asbestosis.
- Heart
problems – pulmonary hypertension caused by asbestosis can lead to the
enlargement of the heart’s right ventricle and, eventually, its failure. (PleuralMesothelioma.com)
