Mesothelioma What to Know About it

Mesothelioma What to Know About it

A Mesothelioma is an uncommon and severe cancer, with about 3,000 new cases diagnosed each year. It most commonly affects individuals between the ages of 75 and 79. Around 80% of those diagnosed are white, and one of the challenges with mesothelioma is its long latency period, symptoms can take anywhere from 20 to 60 years to appear after asbestos exposure. This delay in symptoms often makes the disease difficult to diagnose early, but catching it in its early stages can improve treatment outcomes and survival rates.

Mesothelioma develops in the mesothelium, which is the protective lining covering most of the internal organs. There are several types of mesothelioma, with pleural mesothelioma (affecting the lungs) being the most common. Other types include peritoneal mesothelioma (affecting the abdomen), pericardial mesothelioma (affecting the heart), and testicular mesothelioma (affecting the testes), which is extremely rare.

Each type of mesothelioma has its own set of treatment options, prognosis, and life expectancy. Pleural mesothelioma, for example, is typically treated with surgery, chemotherapy, and radiation, while peritoneal mesothelioma often has a better survival rate and may respond well to surgery. Despite advancements in treatment, the prognosis for mesothelioma remains challenging. That is why early detection and designed treatment are so important. If you have been exposed to asbestos or experience symptoms, it is very important to seek medical attention for evaluation and potential testing.

What Is Mesothelioma?

Mesothelioma is an aggressive cancer that develops in the protective lining of the lungs, abdomen, heart, or testes. It is primarily caused by exposure to asbestos fibres, often in workplaces where asbestos is commonly used. Mesothelioma occurs when cells in the mesothelium, the thin tissue lining that covers most internal organs, turn cancerous. The most common type affects the lungs (pleural mesothelioma), but it can also develop in the abdomen (peritoneal mesothelioma) or the heart (pericardial mesothelioma).
Early diagnosis is challenging because mesothelioma symptoms often resemble those of more common illnesses.

While the disease has a poor prognosis, advancements in treatment and early detection are providing patients with more options and hope. Treatment options for mesothelioma include surgery, chemotherapy, immunotherapy, and radiation. With treatment, the average life expectancy after diagnosis is 12 to 21 months, but some patients have survived for several years beyond that.

READ: Mesothelioma Doctor

Types Of Mesothelioma

Mesothelioma is classified based on where tumours develop in the body. The two most common types are pleural mesothelioma, which affects the lung lining, and peritoneal mesothelioma, which forms in the abdominal lining. Rarer types include pericardial and testicular mesothelioma.

• Pleural Mesothelioma

This is the most common type, forming in the pleura—the thin lining around the lungs and chest cavity. Tumours may also spread to the diaphragm and other areas in the chest.

• Peritoneal Mesothelioma

The second most common type, peritoneal mesothelioma, develops in the peritoneum, the lining of the abdominal organs. It generally has a better survival rate, and surgery is often more effective compared to pleural mesothelioma.

• Pericardial Mesothelioma

A rare type, pericardial mesothelioma affects the lining around the heart. It accounts for about 1% of mesothelioma cases and has limited treatment options, with a median survival of 2 to 6 months.

• Testicular Mesothelioma

The rarest form of mesothelioma, testicular mesothelioma, develops in the lining of the testes. Although treatment options are limited, about one-third of patients survive at least 10 years.

What Causes Mesothelioma?

Asbestos exposure is the leading cause of most mesothelioma cases. Asbestos is a group of minerals naturally found in rocks and soil, known for its long, strong fibres. These fibres don’t break down easily in water or air and are resistant to heat, fire, and many chemicals. Before scientists discovered its harmful effects on health, asbestos was widely used in products like automobile parts and building materials. While asbestos mining has stopped in the U.S., it is still imported for certain products.

Additionally, older homes and buildings may still contain asbestos. When asbestos materials are disturbed, tiny fibres are released into the air. These fibres are so small they can’t be seen, but when inhaled or ingested over time, they can cause serious health issues, including mesothelioma. Workers, as well as others who were exposed to asbestos fibres over many years, are at higher risk for developing mesothelioma and other asbestos-related diseases.

Risk Factors of Mesothelioma| Mesothelioma What to Know About it

The risk of developing mesothelioma increases with asbestos exposure. Common risk factors include:

• Workplace exposure to asbestos.
• Living with someone who works with asbestos and may bring fibres home on clothing.
• Being in a building where asbestos-containing materials have been disturbed.
• Residing near natural asbestos deposits, mines, or factories that use asbestos.

Symptoms of Mesothelioma| Mesothelioma What to Know About it

Mesothelioma symptoms usually take decades to appear after asbestos exposure, which makes early detection challenging. The signs vary depending on the type of mesothelioma:

• Pleural Mesothelioma (lungs): Chest pain, ongoing cough, shortness of breath, fatigue, unexplained weight loss, and sometimes coughing up blood.
• Testicular Mesothelioma: Pain or discomfort in the groin area and swelling or lumps in the testes
• Peritoneal Mesothelioma (abdomen): Abdominal pain, bloating, nausea, and unexplained weight loss.
• Pericardial Mesothelioma (heart): Chest pain, irregular heartbeat, and breathing difficulties.

How Is Mesothelioma Diagnosed?

Doctors use a combination of exams and tests to diagnose mesothelioma. This process helps determine the type of cancer, the type of tumour cells, and the stage of the disease—important details for creating the best treatment plan. Common Diagnostic Methods:

• Physical Exam: Doctors check for lumps or other unusual signs.
• Imaging Tests: X-rays, CT scans, MRIs, and PET scans help detect abnormalities.
• Blood Tests: Certain proteins and biomarkers in the blood may indicate mesothelioma.
• Biopsy: The most reliable method, where a small tissue sample is examined under a microscope for cancer cells.

Once diagnosed, doctors also identify the type of mesothelioma cells in the tumour, which helps guide treatment options and prognosis.

Stages of Mesothelioma| Mesothelioma What to Know About it

Mesothelioma stages describe how far cancer has spread, including tumour size, lymph node involvement, and whether it has metastasized. The disease progresses in four stages, with stages 1 and 2 considered early and stages 3 and 4 more advanced. The 4 Stages of Mesothelioma:

• Stage 1: Cancer is in its earliest phase, with tumours forming in the mesothelial lining.
• Stage 2: Cancer cells begin spreading to nearby lymph nodes.
• Stage 3: Tumors invade deeper tissues of nearby organs and reach distant lymph nodes.
• Stage 4: The most advanced stage, where cancer has spread to other organs, and prognosis is poor.

For pleural mesothelioma, the average life expectancy ranges from 15 to 22 months, but patients diagnosed early may live up to two years with treatment. The treatment plan depends on the cancer stage, tumour cell type, and overall health of the patient.

READ: Mesothelioma Experts

Mesothelioma Cell Types| Mesothelioma What to Know About it

In addition to being classified by where mesothelioma tumours develop, doctors also categorize cancer based on the type of cells involved. These cell types can affect how the cancer responds to treatment and influence the prognosis. Once the cell type is determined, doctors will also assess the stage of the cancer. This information helps them create a personalized treatment plan that’s tailored to the specific characteristics of the mesothelioma, providing the best chances for managing the disease. The most common cell types include:

• Epithelioid: This is the most common and treatable type, making up about 50% to 70% of mesothelioma cases. It tends to respond better to treatment compared to other types.
• Sarcomatoid: A more aggressive and harder-to-treat form, accounting for 10% to 20% of cases. This type often has a more challenging prognosis.
• Biphasic: This type features both epithelioid and sarcomatoid cells. The treatment approach and prognosis depend on which cell type is more dominant.

How Is Mesothelioma Treated?

Mesothelioma treatment typically includes surgery, chemotherapy, radiation, and immunotherapy. The American Society of Clinical Oncology has approved the latest treatment guidelines to help doctors manage the disease effectively. Some patients explore alternative treatments alongside traditional therapies or switch treatments if one is not effective. The best approach depends on the stage of cancer, cell type, and overall health. Common Mesothelioma Treatments:

• Chemotherapy – Uses drugs to kill cancer cells or slow their growth.
• Clinical Trials – Tests new treatments that may improve outcomes.
• Immunotherapy – Boosts the immune system to fight cancer.
• Multimodal Therapy – Combines multiple treatments for better results.
• Palliative Care – Focuses on relieving symptoms and improving quality of life.
• Radiation Therapy – Uses high-energy rays to shrink tumours.
• Surgery – Removes tumours to slow disease progression.
• Tumor Treating Fields – Uses electrical fields to disrupt cancer cell growth.

Mesothelioma is an uncommon yet serious cancer, most often caused by exposure to asbestos. Symptoms may not show up until many years after exposure, which makes early detection difficult. There are different forms of mesothelioma, each with unique treatment approaches, outlooks, and survival rates. If you or someone you know has had asbestos exposure or is experiencing symptoms, it is important to seek medical advice as soon as possible to improve the chances of a better outcome. Visit the website for more information. I hope the provided information is helpful, share your thoughts below in the comment section.

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