Mesothelioma and Asbestos

Asbestos is a mineral that naturally occurs in the form of long, thin fibers. People who are exposed to asbestos risk developing lung diseases, such as mesothelioma.

It may take decades for symptoms to appear after asbestos exposure. Different asbestos types may cause different symptoms.

Pleural Mesothelioma

Pleural mesothelioma can be found in the outer lung lining, also known as pleura. It is the most prevalent form of mesothelioma and accounts for 70% to 79% all diagnosed cases. The condition can cause chest pain, breath shortness, and a feeling of heaviness.

Exposure to asbestos, a class of minerals comprised of microscopic fibers, typically causes this type of cancer. Once inhaled, the fibers cling to the lungs and cause irritation that results in scarring and DNA mutations. Pleura surrounds both the chest cavity and the lungs, which means that irritations can also affect the heart. Mesothelioma symptoms are usually not apparent until 30 to 50 years after exposure.

Chest pain and shortness breath are the most frequently reported symptoms. Patients may also suffer from chest tightness and coughing, or breathing difficulties. People with this cancer have a history of disease that includes asbestos exposure at work. Manufacturing, construction and shipbuilding are among the most frequent jobs that put people at high chance of developing pleural mesothelioma. People who were in the military are at a greater risk due the extensive use asbestos in Navy vessels and Army bunkers.

The TNM (tumors, lymph nodes, and metastases staging system) is the most common staging system for the pleural adenocarcinoma. The stage that a patient is at upon diagnosis will assist their doctor in determining the best treatment plan for them. Patients who have pleural mesothelioma which is in stage three or stage four will suffer a more negative prognosis compared to those who are in a lower stage. Stage four mesothelioma may be spread to the liver, heart, or diaphragm. This can make it more difficult to treat and increases the risk of complications for the patient.

Peritoneal Mesothelioma

Unlike pleural mesothelioma, which develops in the lung lining, peritoneal mesothelioma forms in the peritoneum, an elongated membrane that covers the abdominal cavity and organs such as the intestines and the liver. Similar to pleural mesothelioma and peritoneal mesothelioma can be caused by asbestos lawsuit exposure. It is estimated that only 300-500 cases are diagnosed annually which is lower than pleural asbestosis.

As with pleural asbestosis, symptoms can take several years to show. Patients typically have abdominal pain, and may also have a lump in their abdomen. The symptoms of this kind of mesothelioma could also include nausea, weight loss and fever. A lot of these symptoms can be misinterpreted as digestive issues and can lead to a mistaken diagnosis.

The doctors can detect mesothelioma through looking over the medical history of the patient and performing a physical examination. They may also employ imaging tests such as X-rays, CT scans and PET/CT scans to detect mesothelioma. These tests can identify tumors as well as other signs of cancer which aren't evident on X-rays.

The results of these tests allow doctors to diagnose mesothelioma and establish the stage. They also offer treatment options. The stage is determined by the type of cell and whether the cancer has spread.

The most significant mesothelioma-related risk factor is asbestos exposure. People who have worked in asbestos-containing professions, such as electrical or plumbing work or in manufacturing and construction are more likely to develop the disease. However, even if individuals aren't employed in these areas, they can still be exposed to asbestos through family members or other sources. Anyone who believes they may be at risk should talk to a doctor. If they have any history of exposure to asbestos or mesothelioma, a specialist can assist them in finding out more about their risk.

Risk Factors

Asbestos exposure is a major risk factor for mesothelioma, accounting for up to 80 percent of all cases. Exposure to asbestos can happen through work, military service or through living with a person who works with asbestos law or has previously done such. Asbestos particles are inhaled by those who are exposed to asbestos. These particles can cause irritation to the linings, causing cancerous cells to form in the mesothelium. Mesothelioma may take between 15 and 60 years to develop after exposure to asbestos litigation.

Other risk factors include genetics, smoking and aging. People in their 40s and 50s are more likely to get mesothelioma than people younger or more senior. It takes mesothelioma 20-60 years to show signs of cancer after the first exposure. It is also important to note that mesothelioma can develop in those who were exposed to asbestos but did not work with it directly. This is known as secondary or indirect asbestos exposure and can be just as harmful as direct asbestos exposure.

Smoking increases a person's chances of developing mesothelioma since it causes mesothelium damage and makes it more prone to asbestos. In addition, mesothelioma may be exacerbated by certain illnesses like pneumonia and asbestosis. Men are more likely to develop mesothelioma than women. This is due to men being more likely to work with asbestos and have a longer period of exposure than women. Men are also more likely to live with someone who had asbestos exposure and bring stray asbestos case (Pathwel explained in a blog post) fibers home on their clothing. Women are less likely to come in contact with asbestos, and they don't usually bring asbestos lawyer home on their clothes.

Diagnosis

It is difficult to diagnose mesothelioma due to its symptoms being often similar to other conditions. This can lead to victims being wrongly diagnosed.

The first step in identifying mesothelioma is for NYU Langone doctors to perform an examination of the body and take notes on the medical history of a patient, including asbestos exposure. Doctors can also request an X-ray of the chest or CT scan to look for lumps and other abnormalities as well as evidence of previous asbestos exposure such as plaques on the pleura (thickened pleura with calcium deposits) and the accumulation of fluid between the lung and chest wall (known as pleural effusion).

Other diagnostic tests include an echocardiogram which examines the blood vessels and the heart, and a magnetic resonance imaging, or MRI, test, which makes use of radio waves and magnets to create precise images of the inside of the body. Another way doctors can diagnose mesothelioma is through a surgical biopsy. A surgical biopsy is when doctors remove a small piece of tissue from the pleura or peritoneum for further analysis. A pathologist then examines the tissue using a magnifying lens to determine if it is a cancerous cell.

Mesothelioma can be classified based on the mesothelial type involved, whether these cells are malignant or benign, and the location, type, and stage of the cancer. Some types of mesothelioma are more likely to grow or spread, so it is important to establish a definitive diagnosis so that doctors can treat the disease before it becomes out of control.

Doctors can also perform tests in the laboratory on tumors to determine specific proteins, genes or other factors that can help them describe cancer characteristics and plan treatment. These results are referred to as staging.

Treatment

A mesothelioma diagnosis can be an incredibly frightening prospect. It is important to remember that cancer can be treated especially at its early stages. Many patients with mesothelioma live with the disease for a long time, without spreading.

Exposure to asbestos can trigger mesothelioma through a variety of ways. Asbestos fibers, too small to detect or feel through the naked eye, can become airborne and irritate the lining of the lungs (pleura). Over time irritation can lead to formation of scar tissue which causes changes in the cell structure which eventually lead to tumors.

The pleura surrounds the heart and lungs and also the abdomen. Mesothelium is composed of cells that react when exposed to asbestos. They inflame the tissue and cause it to scar. In time, these changes can lead to the development of malignant mesothelioma tumors.

The symptoms of pleural mesothelioma are breathlessness and chest pain as well as the accumulation of fluid in the lung (pleural effusion). In rare instances, cancer can spread into the tissues that surround the reproductive organs as well as the heart.

If imaging scans reveal an underlying mass in the stomach or lungs, a doctor will order a biopsies. During the procedure doctors remove a small amount of fluid or tumor to allow for tests in the laboratory. The results can confirm the diagnosis of mesothelioma, and also determine the best treatment option.

There are several types of mesothelioma treatment options, including chemotherapy, surgery and immunotherapy. The majority of doctors employ the combination of these treatments. Patients could also benefit from participating in a clinical study of new mesothelioma treatments. To learn more, patients should speak with mesothelioma experts who have experience treating the condition.