Mesothelioma Treatment in Delhi, India

Mesothelioma is a rare and aggressive form of cancer that develops in the mesothelium — the thin, protective layer of tissue that surrounds and protects many of the body’s vital organs. This lining helps reduce friction between organs and allows them to move smoothly within the body. When cancer cells begin to grow in this layer, they can interfere with organ function and spread to nearby tissues.

While this disease most commonly affects the lining of the lungs and chest wall, it can also occur in the abdominal cavity, around the heart, or in the lining of the testes. Mesothelioma is most often linked to long-term asbestos exposure and has a slow development process, with symptoms appearing decades after exposure.

Mesothelioma develops when the mesothelial cells undergo genetic mutations, leading to uncontrolled cell growth and tumour formation. While the exact cause of these mutations is not always clear, prolonged exposure to certain environmental and occupational hazards significantly increases the risk.

Primary Cause: Asbestos Exposure

The leading cause of mesothelioma is exposure to asbestos, a naturally occurring mineral widely used in construction, shipbuilding, manufacturing, and insulation materials. When asbestos fibres are inhaled or ingested, they can lodge in the mesothelium, causing chronic inflammation and cellular damage over time. This can lead to the development of mesothelioma decades after the initial exposure.

• Occupational Exposure – Workers in industries such as construction, mining, shipbuilding, and manufacturing are at the highest risk of asbestos exposure.
• Environmental Exposure – Asbestos can be found in older buildings, contaminated soil, and natural asbestos deposits, leading to inadvertent exposure.
• Secondary Exposure – Family members of workers exposed to asbestos may inhale fibres brought home on clothing, shoes, or hair.

Additional Risk Factors

Apart from asbestos exposure, several other factors may contribute to an increased risk of developing mesothelioma.

• Zeolite Exposure – Certain minerals, such as erionite (a type of zeolite), have asbestos-like properties and have been linked to mesothelioma cases, particularly in regions where these minerals are naturally occurring.
• Radiation Exposure – Individuals who have undergone radiation therapy for previous cancers may have a slightly increased risk of developing mesothelioma later in life.
• SV40 Virus (Simian Virus 40) – Some studies suggest a possible link between mesothelioma and the SV40 virus, which was found in certain polio vaccines in the past. However, research on this connection remains inconclusive.

Who is at Higher Risk?

Although mesothelioma can affect anyone, certain groups are more vulnerable due to occupational, environmental, or lifestyle factors:

• Industrial workers, miners, and construction professionals frequently exposed to asbestos
• Military veterans, particularly those who served in the Navy, where asbestos was extensively used
• Individuals living near asbestos mines or manufacturing plants
• Family members of asbestos-exposed workers due to secondary exposure
• People with a history of long-term asbestos exposure, even if symptoms appear decades later

Mesothelioma is classified based on where it develops in the body. The type of mesothelioma plays a key role in determining symptoms, diagnostic methods, and treatment approaches.

Pleural Mesothelioma (Lungs)

The most common type, pleural mesothelioma, forms in the lining of the lungs (pleura) due to inhaled asbestos fibres. It primarily affects breathing and lung function.

Peritoneal Mesothelioma (Abdomen)

This type develops in the peritoneum, the lining of the abdomen, and is linked to the ingestion of asbestos fibres. It mainly impacts digestion and abdominal health.

Pericardial Mesothelioma (Heart)

A rare form that originates in the pericardium, the protective membrane around the heart. It can affect heart function and circulation.

Testicular Mesothelioma (Testes)

The rarest type, testicular mesothelioma, forms in the tunica vaginalis, the lining around the testes. It is often discovered incidentally during surgery for other testicular conditions.

Cellular Subtypes of Mesothelioma

Mesothelioma is further classified based on cell type, which affects prognosis and treatment response:

• Epithelioid Mesothelioma – The most common and treatable subtype, with cancer cells that grow in clusters.
• Sarcomatoid Mesothelioma – A more aggressive form with spindle-shaped cells that spread quickly.
• Biphasic Mesothelioma – A mix of both epithelioid and sarcomatoid cells, with prognosis depending on the dominant type.

Mesothelioma symptoms vary based on the type and stage of the disease. In the early stages, symptoms may be mild or mistaken for common illnesses. As the cancer progresses, symptoms become more severe.

Pleural Mesothelioma Symptoms (Lungs)

This type primarily affects the respiratory system, leading to:

• Persistent cough – Dry or painful cough that doesn’t go away.
• Shortness of breath – Difficulty breathing due to fluid buildup in the lungs.
• Chest pain – Sharp or dull pain in the chest or rib area.
• Unexplained weight loss – Sudden weight loss without changes in diet.
• Fatigue – Constant tiredness that doesn’t improve with rest.
• Hoarseness or difficulty swallowing – Caused by tumour pressure on the throat.

Peritoneal Mesothelioma Symptoms (Abdomen)

This type affects the digestive system and abdominal organs, leading to:

• Abdominal swelling – Fluid buildup (ascites) causing bloating.
• Abdominal pain – Persistent discomfort or cramps.
• Nausea and vomiting – Often accompanied by loss of appetite.
• Changes in bowel habits – Diarrhoea, constipation, or irregular bowel movements.

Pericardial Mesothelioma Symptoms (Heart)

Though rare, this type affects the heart and circulation, leading to:

• Chest pain – Similar to heart-related conditions.
• Irregular heartbeat (arrhythmia) – Rapid or uneven heartbeats.
• Shortness of breath – Caused by fluid accumulation around the heart.
• Low blood pressure – Leading to dizziness and fatigue.

Testicular Mesothelioma Symptoms (Testes)

The rarest form of mesothelioma, it presents with:

• Swelling or lumps in the scrotum – Often painless but noticeable.
• Testicular pain – In some cases, mild to moderate discomfort.

Since mesothelioma symptoms are often mistaken for other conditions, early medical evaluation is crucial. If you have a history of asbestos exposure and experience persistent symptoms, consult a specialist immediately.

Diagnosing mesothelioma requires a combination of medical history assessment, imaging tests, and biopsies. Since early symptoms often resemble those of less serious conditions, an accurate diagnosis is essential for timely and effective treatment.

Medical History and Physical Examination

Doctors begin by reviewing the patient’s medical history, focusing on asbestos exposure, occupational history, and any symptoms. A physical examination may help identify fluid buildup in the chest or abdomen.

Imaging Tests

Imaging scans are used to detect abnormalities, locate tumours, and determine the extent of cancer spread.

• X-ray – The first step in detecting fluid accumulation, lung thickening, or abnormal growths.
• CT Scan (Computed Tomography) – Provides detailed cross-sectional images to assess tumour size and spread.
• MRI (Magnetic Resonance Imaging) – Offers high-resolution images to differentiate between malignant and benign growths.
• PET Scan (Positron Emission Tomography) – Identifies cancerous activity by detecting metabolic changes in tissues.

Fluid Analysis (Thoracentesis, Paracentesis, Pericardiocentesis)

If fluid accumulates around the lungs, abdomen, or heart, a doctor may extract a sample for analysis to check for cancer cells.

Biopsy

A biopsy is required to confirm mesothelioma. Different types include:

• Needle Biopsy (Fine Needle Aspiration – FNA) – A thin needle extracts tissue from the affected area.
• Surgical Biopsy – A larger tissue sample is taken during surgery for a more accurate diagnosis.
• Thoracoscopy, Laparoscopy, or Mediastinoscopy – Minimally invasive procedures that allow doctors to examine and sample tissues directly.

Histopathology and Biomarker Testing

Pathologists analyse the biopsy sample to determine the type and subtype of mesothelioma. Special tests, including immunohistochemistry, may be used to differentiate mesothelioma from other cancers.

Early detection improves treatment options and outcomes. If you have a history of asbestos exposure or experience persistent symptoms, consult a specialist for screening and further evaluation.

Based on the type and stage of mesothelioma, and the overall health of the patient, treatment plans are created. These plans may involve surgery, chemotherapy, radiation therapy, emerging treatments, or a combination, aiming to improve survival and quality of life.

Surgery

Surgical intervention is often considered for patients with early-stage mesothelioma, aiming to remove as much of the tumour as possible.

• Extrapleural Pneumonectomy (EPP) – A major surgery that removes the affected lung, pleura, diaphragm, and part of the pericardium to prevent cancer spread.
• Pleurectomy/Decortication (P/D) – A lung-sparing surgery that removes the pleura while preserving lung function, reducing symptoms like breathlessness.
• Cytoreductive Surgery (Debulking Surgery) – Removes visible tumours in peritoneal mesothelioma, often followed by heated chemotherapy.

Chemotherapy

Chemotherapy uses drugs to kill cancer cells or slow their growth. It may be used as a primary treatment or combined with surgery or radiation therapy.

• Systemic Chemotherapy – Administered through the bloodstream, commonly using drugs like pemetrexed and cisplatin.
• Hyperthermic Intraperitoneal Chemotherapy (HIPEC) – A heated chemotherapy technique used after cytoreductive surgery to target remaining cancer cells in peritoneal mesothelioma.

Radiation Therapy

Radiation therapy helps control tumour growth, relieve symptoms, and prevent recurrence after surgery. It is commonly used in combination with surgery or chemotherapy.

• External Beam Radiation Therapy (EBRT) – Targets tumours with high-energy rays while minimising damage to healthy tissues.
• Brachytherapy – Involves placing radioactive material close to the tumour site for more localised treatment.

Targeted Therapy and Immunotherapy

Newer treatment approaches are being explored to improve outcomes, especially for advanced cases.

• Targeted Therapy – Uses drugs that specifically attack cancer cells while sparing normal cells. Research on mesothelioma-specific targets is ongoing.
• Immunotherapy – Boosts the body’s immune system to help recognise and destroy mesothelioma cells. Drugs like nivolumab and ipilimumab have shown promising results.

Palliative and Supportive Care

For advanced-stage mesothelioma, treatments focus on relieving symptoms and improving quality of life.

• Pleurodesis – A procedure that prevents fluid buildup in the lungs, reducing breathlessness.
• Pain Management – Includes medications, nerve blocks, and palliative radiation to ease discomfort.
• Nutritional and Psychological Support – Helps patients maintain strength and cope emotionally throughout their treatment journey.

As mesothelioma progresses, it can lead to various complications that affect a patient’s quality of life and overall health. These complications often depend on the type and stage of mesothelioma, as well as the organs affected. Early detection and appropriate management can help alleviate symptoms and improve comfort.

Respiratory Complications

Mesothelioma affecting the lungs can cause breathing difficulties due to tumor growth, fluid buildup, or pressure on the airways.

• Pleural Effusion: The accumulation of fluid between the lung and chest wall can make breathing difficult and cause chest pain.
• Shortness of Breath: Tumors pressing on the lungs may restrict lung expansion, leading to breathlessness even with minimal activity.
• Chronic Cough: Persistent coughing can result from irritation of the lungs or fluid buildup.
• Lung Collapse (Atelectasis): Tumors can block airways, causing part of the lung to collapse and making breathing more difficult.

Pain and Discomfort

As the cancer spreads, it can cause pain due to nerve involvement or pressure on surrounding tissues.

• Chest or Abdominal Pain: Pleural mesothelioma often leads to chest pain, while peritoneal mesothelioma can cause abdominal discomfort.
• Nerve Pain: If tumors press against nerves, patients may experience sharp or radiating pain.
• Bone Pain: In advanced stages, mesothelioma can spread to bones, causing significant discomfort.

Digestive System Complications

Peritoneal mesothelioma, which affects the abdominal lining, can interfere with digestion and overall gastrointestinal function.

• Loss of Appetite: Cancer-related fatigue and digestive issues can reduce appetite, leading to weight loss.
• Bowel Obstruction: Tumor growth in the abdomen may block the intestines, causing severe pain, nausea, and difficulty passing stool.
• Ascites: Fluid buildup in the abdominal cavity can lead to bloating, discomfort, and reduced mobility.

Metastatic Complications

As mesothelioma advances, it may spread to other organs, leading to more severe complications.

• Organ Dysfunction: Cancer spread to the liver, kidneys, or heart can impair their function.
• Blood Clots and Embolism: Mesothelioma increases the risk of blood clot formation, which can lead to deep vein thrombosis (DVT) or life-threatening pulmonary embolism.
• Weakened Immune System: Cancer and its treatments can suppress immune function, making patients more vulnerable to infections.

Emotional and Psychological Impact

Beyond physical complications, mesothelioma also takes an emotional toll on patients and their families.

• Depression and Anxiety: Coping with a cancer diagnosis and its effects can lead to emotional distress.
• Fatigue and Weakness: Cancer-related fatigue can significantly impact daily activities and mental well-being.
• Cognitive Changes: Some patients may experience memory issues or difficulty concentrating, often referred to as “chemo brain.”

Mesothelioma is primarily linked to asbestos exposure, making prevention efforts largely focused on minimizing contact with this hazardous material. While there is no guaranteed way to prevent mesothelioma entirely, taking proactive measures to reduce exposure risks can significantly lower the likelihood of developing this disease.

Avoiding Asbestos Exposure

Asbestos is the leading cause of mesothelioma. Identifying and reducing exposure is key to prevention.

• Workplace Safety Measures: Individuals working in construction, shipbuilding, mining, and manufacturing industries must follow safety protocols, including wearing protective gear and using proper ventilation.
• Home Inspections: Older buildings, especially those built before the 1980s, may contain asbestos in insulation, roofing, or flooring. Professional inspections and safe removal methods are recommended before renovations.
• Regulated Asbestos Handling: Only licensed professionals should handle asbestos removal to prevent airborne exposure.

Protecting High-Risk Workers

Workers in industries with a history of asbestos use must take extra precautions to prevent exposure.

• Use of Personal Protective Equipment (PPE): Respirators, gloves, and disposable coveralls help minimize direct contact with asbestos fibers.
• Proper Decontamination Procedures: Changing clothes and showering after working with asbestos prevents fibers from being carried home, reducing secondary exposure to family members.
• Employer Compliance with Regulations: Companies should adhere to national and international asbestos safety regulations, including proper training and exposure monitoring.

Limiting Secondary Exposure

Even those who do not work directly with asbestos may be at risk due to indirect exposure.

• Washing Work Clothes Separately: Family members should avoid handling clothing worn by asbestos-exposed workers without proper decontamination.
• Avoiding Contaminated Areas: If living near factories or construction sites with known asbestos use, limiting exposure and monitoring air quality is essential.
• Raising Awareness: Educating workers and the public about asbestos dangers helps prevent accidental exposure.

Lifestyle and Health Monitoring

Maintaining overall health can help reduce risks and improve early detection.

• Routine Health Checkups: Individuals with a history of asbestos exposure should undergo regular medical screenings for early signs of lung disease.
• Avoiding Smoking: Smoking weakens lung function and increases the risk of developing asbestos-related diseases.
• Healthy Diet and Exercise: A strong immune system can help the body combat environmental toxins.

Is mesothelioma the same as lung cancer?

No, mesothelioma is a cancer of the mesothelium, the protective lining of organs, whereas lung cancer originates inside the lung tissue. However, both can be linked to asbestos exposure.

How fast does mesothelioma progress?

Mesothelioma is generally slow-growing in its early stages but can progress rapidly once symptoms appear. The speed of progression depends on factors like the type, stage, and overall health of the patient.

Can mesothelioma be inherited?

Mesothelioma is not typically inherited. However, genetic mutations, such as in the BAP1 gene, may increase susceptibility to asbestos-related diseases.

Can diet or lifestyle changes help manage mesothelioma?

Yes, a balanced diet, regular exercise (as tolerated), and stress management can support overall well-being and improve treatment tolerance.

What supportive care options are available for mesothelioma patients?

Supportive care includes pain management, respiratory therapies, nutritional support, and psychological counseling to enhance the patient’s quality of life.

Can mesothelioma patients continue working?

It depends on the stage and severity of symptoms. Many patients experience fatigue and breathing difficulties, which may limit work capacity, especially in physically demanding jobs.

How can caregivers support a mesothelioma patient?

Caregivers can assist with daily activities, accompany patients to medical appointments, provide emotional support, and ensure they receive proper nutrition and symptom management.

Can mesothelioma affect family members of asbestos workers?

Yes, secondary exposure occurs when family members inhale asbestos fibers brought home on a worker’s clothing, leading to an increased risk of mesothelioma.

Can mesothelioma go into remission?

While rare, some patients experience partial or complete remission with aggressive treatment and ongoing monitoring. However, recurrence is common.

How can mesothelioma patients manage breathlessness?

Oxygen therapy, pulmonary rehabilitation, breathing exercises, and medications can help alleviate breathlessness and improve lung function.

Does mesothelioma affect mental health?

Yes, patients may experience anxiety, depression, and emotional distress. Psychological counseling, support groups, and relaxation therapies can help manage mental health concerns.

Reviewed by Dr. S. M. Shuaib Zaidi, Principal Director – Surgical Oncology, on 23 Apr 2025.