Mesothelioma Overview: Symptoms, Treatment & Causes

Mesothelioma cancer is a rare but aggressive disease that affects the thin layer of tissue surrounding the lungs, abdomen, heart, or testicles. Most commonly associated with asbestos exposure, it often remains undetected until it reaches an advanced stage, making it one of the more difficult cancers to treat.

This article provides a comprehensive overview of mesothelioma symptoms, the disease’s known causes, available treatment options, and what patients and families need to know when facing this challenging diagnosis.

What is Mesothelioma Cancer?

Mesothelioma cancer is a type of cancer that forms in the mesothelium, the protective lining that covers many internal organs. The most common form is pleural mesothelioma, which affects the lining of the lungs. Other, less common forms include:

• Peritoneal mesothelioma (lining of the abdomen)
• Pericardial mesothelioma (lining of the heart)
• Testicular mesothelioma (lining of the testes)

This cancer is notoriously difficult to diagnose early due to its long latency period — symptoms can take 20 to 50 years to appear after initial asbestos exposure. For this reason, it is often diagnosed in older adults and is more common in men, largely due to occupational exposure.

Mesothelioma Causes

The primary known mesothelioma cause is exposure to asbestos, a group of naturally occurring minerals used widely in construction, shipbuilding, insulation, and manufacturing until the late 20th century. When asbestos fibres are inhaled or swallowed, they can become lodged in the mesothelium, leading to irritation, inflammation, and eventually cancer.

Other potential causes and risk factors include:

• Occupational exposure: Especially in industries like construction, mining, and shipbuilding.
• Secondary exposure: Family members of workers exposed to asbestos may inhale fibres brought home on clothing.
• Environmental exposure: Living near asbestos mines or factories.
• Genetic predisposition: Some individuals may be more genetically susceptible to asbestos-related diseases.

It's worth noting that smoking is not a direct cause of mesothelioma, but it can significantly worsen outcomes, especially in those with asbestos exposure.

Mesothelioma Symptoms

The symptoms of mesothelioma vary depending on the type and location of the cancer. Because the disease often mimics other conditions and has a slow onset, it is frequently misdiagnosed in its early stages.

Common pleural mesothelioma symptoms include:

• Shortness of breath
• Persistent dry cough
• Chest pain or tightness
• Unexplained weight loss
• Fatigue
• Difficulty swallowing
• Lumps under the skin on the chest

Peritoneal mesothelioma symptoms may include:

• Abdominal pain or swelling
• Nausea or vomiting
• Loss of appetite
• Changes in bowel habits
• Less common forms (pericardial and testicular) may cause:
• Irregular heartbeat or chest pain (pericardial)
• Testicular swelling or lumps (testicular)

If you or someone you know has a history of asbestos exposure and is experiencing any of these mesothelioma symptoms, it’s crucial to consult a specialist as early as possible.

Mesothelioma Diagnosis

Diagnosing mesothelioma requires a combination of:

• Imaging scans (e.g. X-rays, CT scans, MRIs)
• Blood tests (to detect mesothelioma-related biomarkers)
• Biopsies (removal of tissue samples for lab analysis)

Because the disease is rare and shares symptoms with other more common conditions like pneumonia or lung cancer, early detection is challenging — but it is key to improving outcomes.

Mesothelioma Treatment

Mesothelioma treatment depends on the cancer’s stage, location, and the patient's overall health. While a cure is rare, various treatments can help manage the disease, relieve symptoms, and extend life expectancy.

Surgery

Surgical options aim to remove as much of the tumour as possible. Procedures may include:

• Pleurectomy/decortication (P/D) – removal of the pleura lining the lung
• Extrapleural pneumonectomy (EPP) – removal of an entire lung and surrounding tissue

Surgery is typically most effective in early-stage mesothelioma and may be combined with other treatments.

Chemotherapy

Chemotherapy uses anti-cancer drugs to kill cancer cells or stop them from dividing. It’s the most common treatment for mesothelioma and can be used before or after surgery or as palliative care.

Common drugs include pemetrexed and cisplatin.

Radiotherapy

High-energy radiation is used to shrink tumours and relieve symptoms like pain and shortness of breath. It is often used in combination with surgery or chemotherapy.

Immunotherapy

This newer form of treatment helps the immune system recognise and attack cancer cells. Drugs like nivolumab and ipilimumab are showing promise for mesothelioma patients.

Palliative care

For many patients, especially those diagnosed at a later stage, palliative treatments are crucial to maintaining quality of life by managing symptoms and reducing pain.

Final Thoughts

Mesothelioma cancer is a devastating illness most commonly linked to asbestos exposure, with symptoms that often take decades to emerge. Understanding the causes of mesothelioma, recognising early symptoms, and exploring available treatment options can help patients and families take proactive steps toward care and support.

While there is currently no cure, ongoing research into mesothelioma treatment continues to bring new hope, and early diagnosis remains essential in improving quality of life and survival rates.

Suppose you or a loved one has worked in a high-risk industry or suspects past asbestos exposure. In that case, it’s vital to consult a healthcare provider and monitor for any potential mesothelioma symptoms.

For Non-Resident Indians (NRIs), navigating a serious diagnosis like mesothelioma while living abroad can be especially challenging. That’s where Niva Bupa NRI Health Insurance becomes invaluable. With comprehensive international coverage, access to quality medical care, and support for specialised treatments, Niva Bupa helps you focus on recovery — not financial strain. Peace of mind, wherever you are.

FAQs

1. What is mesothelioma cancer?

Mesothelioma is a rare and aggressive form of cancer that affects the mesothelium — the thin lining around the lungs, abdomen, heart, or testes, most commonly caused by asbestos exposure.

2. What are the main causes of mesothelioma?

The primary cause of mesothelioma is prolonged exposure to asbestos. Inhaled or ingested fibres embed in the lining of organs and cause inflammation that may develop into cancer over decades.

3. What are the early symptoms of mesothelioma?

Early symptoms can include chest pain, shortness of breath, a persistent cough, unexplained weight loss, and fatigue. Symptoms vary based on the type and location of the cancer.

4. What treatments are available for mesothelioma?

Mesothelioma treatment options include surgery, chemotherapy, radiotherapy, immunotherapy, and palliative care. The choice depends on the stage and type of cancer.

5. Is mesothelioma curable?

There is currently no cure for mesothelioma, but early diagnosis and aggressive treatment can extend life expectancy and improve quality of life.