The internal bodies of the human body are packed in a protective bag called the mesothelium. The examples of the membranes mesothelilial are the peritoneum (abdominal bodies), pl�vre (lungs), and pericardium (heart).

Under specific conditions, the cells of the protective membrane divide not controlled and become cancerous. This disease is named like mesothelioma, the rare shape of cancer which is caused by exposure prolonged to the asbestos dust.

The disease proves to occur among those which work in the navaux building sites, the mines and the factories of asbestos, industries which manufacture the products based by asbestos, and the companies of heating and construction. Roughly 3,000 cases occur every year in the USA, and the majority of the patients are between 50-70 years. The statistics prove that the males are generally affected and among them of the white more than of the Afro-Americans.

Initially studied towards the end of the studies appronfondies of 1700s were only made in the Sixties. The tumours of the mesothelioma can be benign or malignant. The malignant mesothelioma are classified by category in three types:

* Epithelioid, explaining 50-70% of mesotheliomes.

* Sarcomatoid, explaining 7-20%.

* Mixed or two-phase, explaining 20-35%.

When asbestos fibres are breathed in the lungs they travel by great passages of air to reach the smaller passages and them it pl�vre. In the pl�vre they damage: the cells mesothelial driving with cancer; fabric of lung causing the cancer of lung; and the development of fabric of scar in the lungs known under the name of asbestose. When asbestos fibres are swallowed they reach the abdominal cavity and cause the mesothelioma p�riton�al.

Research indicates that the disease expresses only 20-50 years after being exposed to the asbestos dust. The symptoms are not specific to the disease but a patient can develop:

* Dyspnea.

* The pain of trunk accompanied by sealing considered to be caused by accumulation of fluid in the pl�vre.

* Lombo-crowned pain.

* Swelling of face and arm.

* Sensory loss.

* Weakness of muscle.

* Nausea.

* Vomiting.

* Weight loss which is not explained.

* Persisting dry cough.

* Endolorie gorges.

* Weakens.

* Fever.

* Constipation.

* Problems with the coagulation of blood.

Since what precedes are common to the minor evils, the patients are unaware of often the symptoms. It is recommended to consult a doctor if one of above the symptoms persist or if you knowingly feel to have been or unknowingly exposed to asbestos.

A doctor:

* Take to the bottom of the detailed medical antecedents and test and determine the symptoms and the risk factors.

* Made a physical examination and a control complete for signs of:

1. Pleural, fluid overflowing accumulated in the cavity of trunk.

2. Fluid in the abdominal cavity.

3. Pericardial, fluid overflowing in the lining of the heart.

* Take a radiography and a control of the chest for the thickening of the pl�vre, calcifications, and the lowered cracks of lung.

* Ask for a sweeping of CT to determine clearly the place, the size, and the extent of the problem is suspect� so by it.

* Recommend the tests of the samples of fabric and pleural fluids.

Other risk factors are the cigarette or the smoking cigar, the exposure to the radiation, exposure to the zeolite a compound to which is similar to asbestos, the exposure or the infections caused by SV40, a virus of Simian.

Those which work in a risky environment should wear protective clothing, to have the environments examined regularly for the suspended asbestos particles, and to make sure that they have the medical tests and the report/ratio regular with the doctor all the evils which persist.

Realizing of the disease and its assistances of problems.