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Cancer, Mesothelioma

Overview

Mesothelioma is a type of cancer. It begins when cells in the mesothelium, a thin lining around many internal organs, grow out of control.

The medical term is pronounced "mez-oh-thee-lee-OH-muh." Most often, this cancer forms in the lining around the lungs, which is called pleural mesothelioma. It can also develop in the lining of the abdomen, around the heart, or around the testicles.

Mesothelioma, sometimes called malignant mesothelioma, tends to grow quickly and is often deadly. While treatments exist, there's currently no cure for many people with this type of cancer.

Symptoms

Mesothelioma is a rare cancer that starts in the lining of certain organs. The specific signs and symptoms depend on where the cancer develops.

Pleural Mesothelioma: This type of mesothelioma affects the lining surrounding the lungs (the pleura). Common symptoms include:

  • Chest pain: This pain can range from a dull ache to sharp, stabbing sensations.
  • Coughing that hurts: The cough itself can be painful, sometimes accompanied by difficulty breathing.
  • Shortness of breath: Difficulty catching your breath, or feeling winded easily, can be a sign.
  • Lumps under the skin on the chest: In some cases, a physical lump or swelling might appear on the chest.
  • Fatigue (tiredness): Feeling unusually tired and lacking energy is a common symptom.
  • Unexplained weight loss: Losing weight without trying to diet or exercise is a possible sign.

Peritoneal Mesothelioma: This type of mesothelioma develops in the lining of the abdomen (the peritoneum). Symptoms often include:

  • Belly pain: This pain can vary in intensity and location.
  • Swelling in the abdomen: Fluid buildup in the belly (ascites) can cause swelling.
  • Nausea: Feeling queasy or sick to your stomach.
  • Fatigue (tiredness): Feeling unusually tired and lacking energy is a common symptom.
  • Unexplained weight loss: Losing weight without trying to diet or exercise is a possible sign.

Other Types of Mesothelioma: There are rarer forms of mesothelioma that affect other areas of the body. Our understanding of these less common types is still developing.

  • Pericardial Mesothelioma: This affects the lining around the heart (pericardium). Symptoms might include difficulty breathing and chest pain.

  • Mesothelioma of the Tunica Vaginalis: This is a very rare form that affects the lining around the testicles. Often, the first noticeable symptom is swelling or a lump on a testicle.

It's important to remember that these are just possible symptoms. If you experience any of these symptoms, it's crucial to see a doctor to get a proper diagnosis. Mesothelioma is a serious condition, and early detection can improve treatment outcomes.

When to see a doctor

If you're experiencing any health concerns, make an appointment with your doctor or another healthcare provider.

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Causes

Mesothelioma is a type of cancer that often starts in the thin lining of organs. This lining is called the mesothelium. While many cases are linked to asbestos exposure, not everyone who gets mesothelioma has worked with asbestos. The exact cause isn't always clear.

Imagine the mesothelium as a delicate sheet covering many important organs inside your body. Mesothelioma begins when cells in this sheet develop problems. These cells have instructions, stored in their DNA, for how they should grow, multiply, and eventually die.

In healthy cells, DNA instructions control a balanced growth process. Cells grow and divide at a specific rate, and they know when to stop and die. But in mesothelioma, something goes wrong with the DNA. These altered instructions tell the cells to grow and multiply uncontrollably, ignoring the normal signals to stop. This means the cells keep living when they should die, leading to an excessive build-up of cells.

These extra, uncontrolled cells can form a lump called a tumor. The tumor can grow larger, pushing into and damaging healthy tissues. And sometimes, cancer cells break off and travel to other parts of the body, spreading the disease. This spread is called metastasis.

Risk factors

Mesothelioma is a serious disease, and a major risk factor is being exposed to asbestos. Asbestos is a naturally occurring mineral known for its strength and heat resistance. These properties make it useful in many products, including insulation, brakes, roofing materials, and flooring.

When asbestos is mined or removed, tiny fibers are released into the air, creating dust. If people breathe in or accidentally swallow this dust, the fibers can become lodged in the lungs or stomach. Over time, this can increase the risk of developing mesothelioma.

Scientists don't fully understand how asbestos causes mesothelioma. It's important to note that it can take a very long time – 15 to 40 years or more – for mesothelioma to develop after asbestos exposure.

While many people exposed to asbestos never develop mesothelioma, it's likely that other factors play a role. For example, a family history of the disease or other medical conditions can increase your risk.

Several factors can increase your risk of mesothelioma:

  • Direct Asbestos Exposure: If you've worked with asbestos or been exposed to it in your home, your risk is significantly higher. This could include working in construction, manufacturing, or other industries where asbestos was used.

  • Indirect Exposure: Someone who works with asbestos might unknowingly bring home asbestos fibers on their clothes or skin. Long-term exposure to these fibers in the home can also increase the risk of mesothelioma for family members.

  • Family History: Having a parent, sibling, or child with mesothelioma can make you more susceptible to the disease. This suggests a possible genetic component or shared environmental factors.

  • Chest Radiation Therapy: Previous radiation therapy to the chest area for cancer treatment can also increase the risk of mesothelioma. This is likely due to the effects of radiation on lung tissue.

It's crucial to remember that many people exposed to asbestos never get mesothelioma. However, understanding the potential risk factors can help individuals take steps to protect themselves.

Complications

Having problems breathing, chest pain, or difficulty swallowing can be signs of serious health issues. These symptoms, while sometimes minor, could indicate conditions needing medical attention.

Breathing difficulties can range from mild shortness of breath to a complete inability to breathe. This could stem from various causes, including allergies, infections, or more serious conditions like asthma or heart problems. It's crucial to pay attention to how quickly you're breathing, how deep your breaths are, and if there's any wheezing or coughing.

Chest pain can be caused by many things. It could be a sign of a heart attack or angina (chest pain related to reduced blood flow to the heart). Muscle strains, injuries, or even indigestion can also cause chest pain. The location, intensity, and duration of the pain are important details to note. Does the pain radiate (spread) to other parts of your body? Is it sharp or dull? Is it constant or intermittent?

Difficulty swallowing, or dysphagia, can be a symptom of various issues. It could be caused by a simple irritation in the throat, like from eating something too hot. However, persistent or worsening difficulty swallowing could indicate more serious problems, such as esophageal spasms, tumors, or even certain neurological conditions. Notice if you have pain while swallowing, if solids or liquids are harder to swallow, or if you experience food getting stuck.

If you experience any of these symptoms, it's essential to seek medical advice promptly. A doctor can properly diagnose the cause and recommend the best course of treatment. Don't ignore these symptoms, as early diagnosis and intervention can lead to better outcomes. These symptoms can be concerning, and it's always best to discuss them with a healthcare professional.

Prevention

Avoiding asbestos exposure can help prevent mesothelioma.

Many people who get mesothelioma worked with asbestos. This material is found in many places, and workers in certain jobs are more likely to be exposed. These jobs include:

  • Mining asbestos: People who extract asbestos from the ground.
  • Electricians: Wiring often contains asbestos.
  • Plumbers and pipefitters: Older pipes and insulation may contain asbestos.
  • Insulators: This job frequently involves asbestos-containing materials.
  • Shipyard workers: Shipbuilding often uses asbestos-based materials.
  • Demolition workers: Breaking down old buildings can release asbestos fibers.
  • Brake mechanics: Some older brake components contain asbestos.
  • Certain military personnel: Certain military jobs may involve asbestos exposure.
  • Home remodelers: Renovating older homes or buildings might disturb asbestos.

Protecting yourself at work:

If you work with materials that might contain asbestos, ask your employer about potential exposure risks. Always follow safety rules and wear protective gear, like masks and special suits. It's also important to change out of work clothes and thoroughly wash before eating or going home. Talk to your doctor about additional ways to protect yourself from asbestos exposure.

Asbestos in your home:

Older homes and buildings sometimes contain asbestos. In most cases, it's safer to leave asbestos-containing materials undisturbed. Trying to remove asbestos yourself can spread the fibers into the air, which you could breathe in.

Getting professional help:

If you're concerned about asbestos in your home, contact trained professionals who specialize in asbestos identification and testing. These experts can assess the risk to your health by testing the air in your home. Never try to remove asbestos yourself. Always hire a qualified professional asbestos abatement company to handle the removal safely.

Diagnosis

Diagnosing mesothelioma often begins with a physical exam by a doctor. They will check for any unusual lumps or other signs that might suggest the problem.

Imaging tests are frequently used to look for mesothelioma. These might include an X-ray of your chest and a CT scan (a detailed 3D X-ray) of your chest or abdomen.

Based on the initial results, further tests may be needed to determine if mesothelioma or another condition is causing your symptoms.

A biopsy is crucial for confirming or ruling out mesothelioma. A biopsy is the only definitive way to know if you have mesothelioma. The specific type of biopsy depends on where the suspected mesothelioma is located in your body.

There are several ways to perform a biopsy:

  • Needle biopsy: A thin needle is inserted through the skin of your chest or abdomen to collect fluid or a small piece of tissue.
  • Surgical biopsy: During surgery, a surgeon might remove a sample of tissue. This might involve making a small incision and using a tiny camera (endoscope) to visualize the area. Surgical tools can then be used to get a tissue sample.

The tissue sample is sent to a lab for examination. Lab tests can determine if the tissue is cancerous and, if so, if it's mesothelioma.

Once mesothelioma is confirmed, your doctor may order more tests to see if the cancer has spread to nearby lymph nodes or other parts of your body. These additional tests might include:

  • More CT scans: These can show if the cancer has spread to other areas.
  • MRI (magnetic resonance imaging): This type of scan creates detailed images of the inside of your body, helping to see if the cancer has spread.
  • PET scan (positron emission tomography): This scan can help pinpoint areas where the cancer might be active or have spread.

These tests help your doctor determine the stage of your mesothelioma. The stage helps them choose the best treatment plan for you.

Pleural mesothelioma (the most common type) has stages from 1 to 4. A lower stage (like 1) usually means the cancer is primarily located near the lungs. As the cancer grows and spreads to nearby lymph nodes, the stage number increases. Stage 4 mesothelioma has spread to other parts of the body.

Other types of mesothelioma do not have a standard staging system.

Treatment

Understanding Mesothelioma Treatment Options

Mesothelioma is a serious cancer that often spreads quickly. Unfortunately, there's currently no cure for most people. Doctors usually diagnose mesothelioma at a stage where surgery to completely remove it isn't possible. Instead, treatment focuses on managing the cancer to improve comfort and quality of life.

Treatment Goals: It's crucial to discuss your treatment goals with your healthcare team. Some people want to try every possible treatment, even with potential side effects, for a chance at a better outcome. Others prioritize treatments that ease symptoms and help them live comfortably for as long as possible.

Surgical Options:

  • Fluid Drainage: Mesothelioma, especially pleural mesothelioma (affecting the lining of the lungs), can cause fluid buildup in the chest cavity, making breathing difficult. Surgeons can insert a tube to drain the fluid. Often, medicine is also given to prevent fluid from building up again (pleurodesis).
  • Removing Lung Lining (Pleurectomy): Surgeons may remove the lining around the lungs (the pleura) to reduce symptoms. This surgery doesn't cure the cancer but can lessen discomfort.
  • Removing a Lung and Surrounding Tissue: In some cases, removing the affected lung and the surrounding tissue can ease symptoms. This procedure allows for higher doses of radiation therapy to the chest if needed, as the lung doesn't need to be protected.
  • Peritoneal Mesothelioma Surgery: For peritoneal mesothelioma (affecting the lining of the abdominal cavity), surgery aims to remove as much of the cancer as possible. Chemotherapy before or after surgery may also be part of the treatment plan.

Other Treatment Options:

  • Chemotherapy: Chemotherapy uses strong drugs to kill cancer cells. It can be used before surgery, to treat large or spread mesothelioma, or to shrink tumors. In some cases, heated chemotherapy is delivered directly into the abdomen (HIPEC) to treat peritoneal mesothelioma.
  • Radiation Therapy: Radiation therapy uses powerful energy beams (like X-rays) to target and kill cancer cells. It can be used to kill remaining cancer cells after surgery, shrink tumors before surgery, or ease symptoms that surgery can't address.
  • Immunotherapy: This treatment helps the body's immune system fight the cancer. The immune system usually fights off diseases by attacking foreign cells. Cancer cells often hide from the immune system, so immunotherapy aims to help the body recognize and destroy them.
  • Targeted Therapy: These drugs target specific chemicals within cancer cells, blocking their growth and causing them to die. Targeted therapies are often combined with chemotherapy and used when other treatments haven't worked.
  • Clinical Trials: Clinical trials test new treatments. People with mesothelioma might choose a clinical trial for a chance to try newer approaches, but a cure isn't guaranteed. These trials are important for improving future treatment options.

Rare Types and Other Considerations:

  • Rare Forms of Mesothelioma: Mesothelioma affecting the lining of the heart (pericardial) or the lining of the testicles (tunica vaginalis) are rare. Early-stage cancers that haven't spread might be surgically removed. For advanced cancers, treatment aims to improve quality of life.
  • Complementary and Alternative Treatments: While no alternative medicine treatments have proven effective against mesothelioma, some complementary and alternative approaches may help manage symptoms, such as acupuncture, relaxation techniques, or breathing exercises. Always discuss these with your healthcare team.

Managing the Impact of a Mesothelioma Diagnosis:

Facing a mesothelioma diagnosis is emotionally challenging. To regain a sense of control:

  • Ask Questions: Write down questions for your doctor and gather information about the disease (from reputable sources like the National Cancer Institute, American Cancer Society, and Mesothelioma Applied Research Foundation).
  • Seek Support: Lean on friends, family, and support groups for emotional and practical help. Support groups can provide a valuable network of understanding and shared experiences.
  • Advance Directives: Discuss advance directives with your healthcare team to ensure your medical wishes are documented in case you become unable to communicate.

This information is for general knowledge and should not be considered medical advice. Always consult with your healthcare team for personalized treatment recommendations.

Preparing for your appointment

If you're experiencing symptoms that concern you, schedule an appointment with a doctor or other healthcare provider. They might refer you to a specialist, depending on the location of your symptoms. For example, if you have problems with your lungs, a pulmonologist (a doctor specializing in lung conditions) will likely be involved. If your symptoms are in your belly, a gastroenterologist (a specialist in the digestive system) might be needed.

Getting Ready for Your Appointment:

  • Preparation: Before your appointment, ask your doctor's office if there's any special preparation needed, like a restricted diet for a specific test.
  • Detailed Symptom Log: Write down all your symptoms, including when they started. Even if they seem unrelated to the reason you're seeing the doctor, note them.
  • Personal Information: Record any significant life events, stress factors, or recent changes.
  • Medication List: List all medications, vitamins, and supplements, including dosages.
  • Support Person: Consider bringing a family member or friend. They might remember details you miss.
  • Medical Records: Bring any relevant medical records, such as past X-rays.
  • Questions: Prepare a list of questions for your healthcare provider.

Important Questions to Ask (especially if you suspect mesothelioma):

  • Possible Causes: What are the most likely causes of my symptoms or condition? What are other possible explanations?
  • Tests Needed: What tests will be needed to diagnose the problem?
  • Prognosis: What is the expected outcome of my condition? Will it likely be temporary or long-lasting?
  • Treatment Plan: What's the best course of action for my condition?
  • Managing Multiple Conditions: If I have other health issues, how can I best manage them all together?
  • Resources: Are there any brochures or printed materials available? Could you suggest helpful websites?

It's essential to ask all your questions.

Your healthcare provider may also ask you questions, such as:

  • Symptom Pattern: Do your symptoms happen all the time, or do they come and go?
  • Symptom Severity: How bad are your symptoms?
  • Symptom Triggers: What, if anything, seems to improve your symptoms? What makes them worse?
  • Breathing Difficulties: Does it hurt to take a deep breath?
  • Impact on Daily Life: Do your symptoms prevent you from working or doing everyday activities?
  • Exposure to Asbestos: Have you ever worked with asbestos?

Important Note: Try to avoid activities that worsen your symptoms. If you're short of breath, rest until you can see your healthcare provider. If your shortness of breath gets severe, seek immediate medical attention.

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Disclaimer: August is a health information platform and its responses don't constitute medical advise. Always consult with a licenced medical professional near you before making any changes.

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