Malignant Mesothelioma Treatment (PDQ®): Treatment - Patient Information [NCI]

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This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http://cancer.gov or call 1-800-4-CANCER.

General Information About Malignant Mesothelioma

Malignant mesothelioma is a disease in which malignant (cancer) cells form in the lining of the chest or abdomen.

Malignant mesothelioma is a disease in which malignant (cancer) cells are found in the pleura (the thin layer of tissue that lines the chest cavity and covers the lungs) or the peritoneum (the thin layer of tissue that lines the abdomen and covers most of the organs in the abdomen). Malignant mesothelioma may also form in the heart or testicles, but this is rare.

Malignant mesothelioma; drawing shows parts of the body where malignant mesothelioma may form, including the lungs, heart, pleura, abdominal cavity, and testicles.

Malignant mesothelioma forms in the thin layer of tissue that covers the lung, chest wall, abdomen, heart, or testicles.

Being exposed to asbestos can affect the risk of malignant mesothelioma.

Anything that increases your chance of getting a disease is called a risk factor. Having a risk factor does not mean that you will get cancer; not having risk factors doesn't mean that you will not get cancer. Talk to your doctor if you think you may be at risk.

Most people with malignant mesothelioma have worked or lived in places where they inhaled or swallowed asbestos. After being exposed to asbestos, it usually takes a long time for malignant mesothelioma to form. Living with a person who works near asbestos is also a risk factor for malignant mesothelioma.

Signs and symptoms of malignant mesothelioma include shortness of breath and pain under the rib cage.

Sometimes the cancer causes fluid to collect in the chest or in the abdomen. Signs and symptoms may be caused by the fluid, malignant mesothelioma, or other conditions. Check with your doctor if you have any of the following:

  • Trouble breathing.
  • Cough.
  • Pain under the rib cage.
  • Pain or swelling in the abdomen.
  • Lumps in the abdomen.
  • Constipation.
  • Problems with blood clots (clots form when they shouldn't).
  • Weight loss for no known reason.
  • Feeling very tired.

Tests that examine the inside of the chest and abdomen are used to detect (find) and diagnose malignant mesothelioma.

Sometimes it is hard to tell the difference between malignant mesothelioma in the chest and lung cancer.

The following tests and procedures may be used to diagnose malignant mesothelioma in the chest or peritoneum:

  • Physical exam and history: An exam of the body to check general signs of health, including checking for signs of disease, such as lumps or anything else that seems unusual. A history of the patient's health habits, exposure to asbestos, and past illnesses and treatments will also be taken.
  • Chest x-ray: An x-ray of the organs and bones inside the chest. An x-ray is a type of energy beam that can go through the body and onto film, making a picture of areas inside the body.

    Chest x-ray; drawing shows the patient standing with her back to the x-ray machine. X-rays are used to take pictures of organs and bones of the chest. X-rays pass through the patient onto film.

    X-ray of the chest. X-rays are used to take pictures of organs and bones of the chest. X-rays pass through the patient onto film.
  • CT scan (CAT scan): A procedure that makes a series of detailed pictures of the chest and abdomen, taken from different angles. The pictures are made by a computer linked to an x-ray machine. A dye may be injected into a vein or swallowed to help the organs or tissues show up more clearly. This procedure is also called computed tomography, computerized tomography, or computerized axial tomography.
  • Biopsy: The removal of cells or tissues from the pleura or peritoneum so they can be viewed under a microscope by a pathologist to check for signs of cancer.

    Procedures used to collect the cells or tissues include the following:

    • Fine-needle (FNA) aspiration biopsy of the lung: The removal of tissue or fluid using a thin needle. An imaging procedure is used to locate the abnormal tissue or fluid in the lung. A small incision may be made in the skin where the biopsy needle is inserted into the abnormal tissue or fluid, and a sample is removed.

      Fine-needle aspiration biopsy of the lung; drawing shows a patient lying on a table that slides through the computed tomography (CT) machine with an x-ray picture of a cross-section of the lung on a monitor above the patient. Drawing also shows a doctor using the x-ray picture to help place the biopsy needle through the chest wall and into the area of abnormal lung tissue. Inset shows a side view of the chest cavity and lungs with the biopsy needle inserted into the area of abnormal tissue.

      Fine-needle aspiration biopsy of the lung. The patient lies on a table that slides through the computed tomography (CT) machine, which takes x-ray pictures of the inside of the body. The x-ray pictures help the doctor see where the abnormal tissue is in the lung. A biopsy needle is inserted through the chest wall and into the area of abnormal lung tissue. A small piece of tissue is removed through the needle and checked under the microscope for signs of cancer.
    • Thoracoscopy: An incision (cut) is made between two ribs and a thoracoscope (a thin, tube-like instrument with a light and a lens for viewing) is inserted into the chest.
    • Thoracotomy: An incision (cut) is made between two ribs to check inside the chest for signs of disease.
    • Peritoneoscopy: An incision (cut) is made in the abdominal wall and a peritoneoscope (a thin, tube-like instrument with a light and a lens for viewing) is inserted into the abdomen.
    • Laparotomy: An incision (cut) is made in the wall of the abdomen to check the inside of the abdomen for signs of disease.
    • Open biopsy: A procedure in which an incision (cut) is made through the skin to expose and remove tissues to check for signs of disease.

    The following tests may be done on the cells and tissue samples that are taken:

    • Cytologic exam: An exam of cells under a microscope to check for anything abnormal. For mesothelioma, fluid is taken from the chest or from the abdomen. A pathologist checks the fluid for signs of cancer.
    • Immunohistochemistry: A test that uses antibodies to check for certain antigens in a sample of tissue. The antibody is usually linked to a radioactive substance or a dye that causes the tissue to light up under a microscope. This type of test may be used to tell the difference between different types of cancer.
    • Electron microscopy: A laboratory test in which cells in a sample of tissue are viewed under a high-powered microscope to look for certain changes in the cells. An electron microscope shows tiny details better than other types of microscopes.

Certain factors affect prognosis (chance of recovery) and treatment options.

The prognosis (chance of recovery) and treatment options depend on the following:

  • The stage of the cancer.
  • The size of the tumor.
  • Whether the tumor can be removed completely by surgery.
  • The amount of fluid in the chest or abdomen.
  • The patient's age.
  • The patient's activity level.
  • The patient's general health, including lung and heart health.
  • The type of mesothelioma cells and how they look under a microscope.
  • The number of white blood cells and how much hemoglobin is in the blood.
  • Whether the patient is male or female.
  • Whether the cancer has just been diagnosed or has recurred (come back).

Stages of Malignant Mesothelioma

After malignant mesothelioma has been diagnosed, tests are done to find out if cancer cells have spread to other parts of the body.

The process used to find out if cancer has spread outside the pleura or peritoneum is called staging. The information gathered from the staging process determines the stage of the disease. It is important to know whether the cancer has spread in order to plan treatment.

The following tests and procedures may be used in the staging process:

  • CT scan (CAT scan): A procedure that makes a series of detailed pictures of the chest and abdomen, taken from different angles. The pictures are made by a computer linked to an x-ray machine. A dye may be injected into a vein or swallowed to help the organs or tissues show up more clearly. This procedure is also called computed tomography, computerized tomography, or computerized axial tomography.
  • PET scan (positron emission tomography scan): A procedure to find malignant tumor cells in the body. A small amount of radioactive glucose (sugar) is injected into a vein. The PET scanner rotates around the body and makes a picture of where glucose is being used in the body. Malignant tumor cells show up brighter in the picture because they are more active and take up more glucose than normal cells do.
  • Endoscopic ultrasound (EUS): A procedure in which an endoscope is inserted into the body. An endoscope is a thin, tube-like instrument with a light and a lens for viewing. A probe at the end of the endoscope is used to bounce high-energy sound waves (ultrasound) off internal tissues or organs and make echoes. The echoes form a picture of body tissues called a sonogram. This procedure is also called endosonography. EUS may be used to guide fine-needle aspiration (FNA) biopsy of the lung, lymph nodes, or other areas.

    Endoscopic ultrasound-guided fine-needle aspiration biopsy; drawing shows an endoscope with an ultrasound probe and biopsy needle inserted through the mouth and into the esophagus. Drawing also shows lymph nodes near the esophagus and cancer in one lung. Inset shows the ultrasound probe locating the lymph nodes with cancer and the biopsy needle removing tissue from one of the lymph nodes near the esophagus.

    Endoscopic ultrasound-guided fine-needle aspiration biopsy. An endoscope that has an ultrasound probe and a biopsy needle is inserted through the mouth and into the esophagus. The probe bounces sound waves off body tissues to make echoes that form a sonogram (computer picture) of the lymph nodes near the esophagus. The sonogram helps the doctor see where to place the biopsy needle to remove tissue from the lymph nodes. This tissue is checked under a microscope for signs of cancer.
  • Pulmonary function test (PFT): A test to see how well the lungs are working. It measures how much air the lungs can hold and how quickly air moves into and out of the lungs. It also measures how much oxygen is used and how much carbon dioxide is given off during breathing. This is also called lung function test.

There are three ways that cancer spreads in the body.

Cancer can spread through tissue, the lymph system, and the blood:

  • Tissue. The cancer spreads from where it began by growing into nearby areas.
  • Lymph system. The cancer spreads from where it began by getting into the lymph system. The cancer travels through the lymph vessels to other parts of the body.
  • Blood. The cancer spreads from where it began by getting into the blood. The cancer travels through the blood vessels to other parts of the body.

Cancer may spread from where it began to other parts of the body.

When cancer spreads to another part of the body, it is called metastasis. Cancer cells break away from where they began (the primary tumor) and travel through the lymph system or blood.

  • Lymph system. The cancer gets into the lymph system, travels through the lymph vessels, and forms a tumor (metastatic tumor) in another part of the body.
  • Blood. The cancer gets into the blood, travels through the blood vessels, and forms a tumor (metastatic tumor) in another part of the body.

The metastatic tumor is the same type of cancer as the primary tumor. For example, if malignant mesothelioma spreads to the brain, the cancer cells in the brain are actually malignant mesothelioma cells. The disease is metastatic malignant mesothelioma, not brain cancer.

The following stages are used for malignant mesothelioma:

Stage I (Localized)

Stage I is divided into stages IA and IB:

  • In stage IA, cancer is found in one side of the chest in the lining of the chest wall and may also be found in the lining of the chest cavity between the lungs and/or the lining that covers the diaphragm. Cancer has not spread to the lining that covers the lung.
  • In stage IB, cancer is found in one side of the chest in the lining of the chest wall and the lining that covers the lung. Cancer may also be found in the lining of the chest cavity between the lungs and/or the lining that covers the diaphragm.

Stage II (Advanced)

In stage II, cancer is found in one side of the chest in the lining of the chest wall, the lining of the chest cavity between the lungs, the lining that covers the diaphragm, and the lining that covers the lung. Also, cancer has spread into one or both of the following:

  • Lung tissue.
  • Diaphragm.

Stage III (Advanced)

In stage III, either of the following is true:

Cancer is found in one side of the chest in the lining of the chest wall. Cancer may have spread to:

  • the lining of the chest cavity between the lungs;
  • the lining that covers the diaphragm;
  • the lining that covers the lung;
  • the lung tissue;
  • the diaphragm.

Cancer has spread to lymph nodes where the lung joins the bronchus, along the trachea and esophagus, between the lung and diaphragm, or below the trachea.

or

Cancer is found in one side of the chest in the lining of the chest wall, the lining of the chest cavity between the lungs, the lining that covers the diaphragm, and the lining that covers the lung. Cancer has spread into one or more of the following:

  • Tissue between the ribs and the lining of the chest wall.
  • Fat in the area between the lungs.
  • Soft tissues of the chest wall.
  • Sac around the heart.

Cancer may have spread to lymph nodes where the lung joins the bronchus, along the trachea and esophagus, between the lung and diaphragm, or below the trachea.

Stage IV (Advanced)

In stage IV, cancer cannot be removed by surgery and is found in one or both sides of the body. Cancer may have spread to lymph nodes anywhere in the chest or above the collarbone. Cancer has spread in one or more of the following ways:

  • Through the diaphragm into the peritoneum (the thin layer of tissue that lines the abdomen and covers most of the organs in the abdomen).
  • To the tissue lining the chest on the opposite side of the body as the tumor.
  • To the chest wall and may be found in the rib.
  • Into the organs in the center of the chest cavity.
  • Into the spine.
  • Into the sac around the heart or into the heart muscle.
  • To distant parts of the body such as the brain, spine, thyroid, or prostate.

Recurrent Malignant Mesothelioma

Recurrent malignant mesothelioma is cancer that has recurred (come back) after it has been treated. The cancer may come back in the chest or abdomen or in other parts of the body.

Treatment Option Overview

There are different types of treatment for patients with malignant mesothelioma.

Different types of treatments are available for patients with malignant mesothelioma. Some treatments are standard (the currently used treatment), and some are being tested in clinical trials. A treatment clinical trial is a research study meant to help improve current treatments or obtain information on new treatments for patients with cancer. When clinical trials show that a new treatment is better than the standard treatment, the new treatment may become the standard treatment. Patients may want to think about taking part in a clinical trial. Some clinical trials are open only to patients who have not started treatment.

Four types of standard treatment are used:

Surgery

The following surgical treatments may be used for malignant mesothelioma in the chest:

  • Wide local excision: Surgery to remove the cancer and some of the healthy tissue around it.
  • Pleurectomy and decortication: Surgery to remove part of the covering of the lungs and lining of the chest and part of the outside surface of the lungs.
  • Extrapleural pneumonectomy: Surgery to remove one whole lung and part of the lining of the chest, the diaphragm, and the lining of the sac around the heart.
  • Pleurodesis: A surgical procedure that uses chemicals or drugs to make a scar in the space between the layers of the pleura. Fluid is first drained from the space using a catheter or chest tube and the chemical or drug is put into the space. The scarring stops the build-up of fluid in the pleural cavity.

Even if the doctor removes all the cancer that can be seen at the time of the surgery, some patients may be given chemotherapy or radiation therapy after surgery to kill any cancer cells that are left. Treatment given after surgery, to lower the risk that the cancer will come back, is called adjuvant therapy.

Radiation therapy

Radiation therapy is a cancer treatment that uses high-energy x-rays or other types of radiation to kill cancer cells or keep them from growing. There are two types of radiation therapy:

  • External radiation therapy uses a machine outside the body to send radiation toward the cancer.
  • Internal radiation therapy uses a radioactive substance sealed in needles, seeds, wires, or catheters that are placed directly into or near the cancer.

The way the radiation therapy is given depends on the type and stage of the cancer being treated. External radiation therapy is used to treat malignant mesothelioma, and may also be used as palliative therapy to relieve symptoms and improve quality of life.

Chemotherapy

Chemotherapy is a cancer treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. When chemotherapy is taken by mouth or injected into a vein or muscle, the drugs enter the bloodstream and can reach cancer cells throughout the body (systemic chemotherapy). When chemotherapy is placed directly into the cerebrospinal fluid, an organ, or a body cavity such as the chest or peritoneum, the drugs mainly affect cancer cells in those areas (regional chemotherapy). Combination chemotherapy is the use of more than one anticancer drug.

Hyperthermic intraperitoneal chemotherapy is used in the treatment of mesothelioma that has spread to the peritoneum (tissue that lines the abdomen and covers most of the organs in the abdomen). After the surgeon removes all the cancer that can be seen, a solution containing anticancer drugs is heated and pumped into and out of the abdomen to kill cancer cells that remain. Heating the anticancer drugs may kill more cancer cells.

The way the chemotherapy is given depends on the type and stage of the cancer being treated.

See Drugs Approved for Malignant Mesothelioma for more information.

Targeted therapy

Targeted therapy is a type of treatment that uses drugs or other substances to attack specific cancer cells. Targeted therapies usually cause less harm to normal cells than chemotherapy or radiation therapy do.

Monoclonal antibody therapy is a type of targeted therapy that uses antibodies made in the laboratory, from a single type of immune system cell. These antibodies can identify substances on cancer cells or normal substances that may help cancer cells grow. The antibodies attach to the substances and kill the cancer cells, block their growth, or keep them from spreading. Monoclonal antibodies are given by infusion. They may be used alone or to carry drugs, toxins, or radioactive material directly to cancer cells.

Bevacizumab is a monoclonal antibody used to treat advanced malignant mesothelioma. It binds to a protein called vascular endothelial growth factor (VEGF). This may prevent the growth of new blood vessels that tumors need to grow. Other monoclonal antibodies are being studied in malignant mesothelioma.

Kinase inhibitors are a type of targeted therapy being studied in the treatment of malignant mesothelioma. Kinase inhibitors are targeted therapy drugs that block signals needed for tumors to grow.

New types of treatment are being tested in clinical trials.

This summary section describes treatments that are being studied in clinical trials. It may not mention every new treatment being studied. Information about clinical trials is available from the NCI website.

Biologic therapy

Biologic therapy is a treatment that uses the patient's immune system to fight cancer. Substances made by the body or made in a laboratory are used to boost, direct, or restore the body's natural defenses against cancer. This type of cancer treatment is also called biotherapy or immunotherapy.

Patients may want to think about taking part in a clinical trial.

For some patients, taking part in a clinical trial may be the best treatment choice. Clinical trials are part of the cancer research process. Clinical trials are done to find out if new cancer treatments are safe and effective or better than the standard treatment.

Many of today's standard treatments for cancer are based on earlier clinical trials. Patients who take part in a clinical trial may receive the standard treatment or be among the first to receive a new treatment.

Patients who take part in clinical trials also help improve the way cancer will be treated in the future. Even when clinical trials do not lead to effective new treatments, they often answer important questions and help move research forward.

Patients can enter clinical trials before, during, or after starting their cancer treatment.

Some clinical trials only include patients who have not yet received treatment. Other trials test treatments for patients whose cancer has not gotten better. There are also clinical trials that test new ways to stop cancer from recurring (coming back) or reduce the side effects of cancer treatment.

Clinical trials are taking place in many parts of the country. See the Treatment Options section that follows for links to current treatment clinical trials. These have been retrieved from NCI's listing of clinical trials.

Follow-up tests may be needed.

Some of the tests that were done to diagnose the cancer or to find out the stage of the cancer may be repeated. Some tests will be repeated in order to see how well the treatment is working. Decisions about whether to continue, change, or stop treatment may be based on the results of these tests.

Some of the tests will continue to be done from time to time after treatment has ended. The results of these tests can show if your condition has changed or if the cancer has recurred (come back). These tests are sometimes called follow-up tests or check-ups.

Treatment Options for Malignant Mesothelioma

Localized Malignant Mesothelioma (Stage I)

If malignant mesothelioma is in one part of the chest lining, treatment may be the following:

  • Surgery to remove the part of the chest lining with cancer and the tissue around it.

If malignant mesothelioma is found in more than one place in the chest, treatment may be one of the following:

  • Extrapleural pneumonectomy.
  • Pleurectomy and decortication, with or without radiation therapy, as palliative therapy to relieve symptoms and improve quality of life.
  • Radiation therapy as palliative therapy to relieve symptoms and improve quality of life.
  • A clinical trial of anticancer drugs placed directly into the chest after surgery to remove the tumor.
  • A clinical trial of combinations of surgery, radiation therapy, and chemotherapy.
  • A clinical trial of a new treatment.

If malignant mesothelioma is in the peritoneal lining, treatment may be the following:

  • Surgery to remove the part of the peritoneal lining with cancer and the tissue around it.

Check the list of NCI-supported cancer clinical trials that are now accepting patients with localized malignant mesothelioma. For more specific results, refine the search by using other search features, such as the location of the trial, the type of treatment, or the name of the drug. Talk with your doctor about clinical trials that may be right for you. General information about clinical trials is available from the NCI website.

Advanced Malignant Mesothelioma (Stage II, Stage III, and Stage IV)

If advanced malignant mesothelioma is found in the chest, treatment may be one of the following:

  • Combination chemotherapy and targeted therapy with bevacizumab.
  • Chemotherapy placed directly into the chest cavity to shrink the tumors and keep fluid from building up.
  • Surgery to drain fluid that has collected in the chest, to relieve chest discomfort and improve quality of life. Pleurodesis may be done to stop more fluid from collecting in the chest.
  • Pleurectomy and decortication, as palliative therapy to relieve symptoms and improve quality of life.
  • Radiation therapy as palliative therapy to relieve pain.
  • A clinical trial of combinations of surgery, radiation therapy, and chemotherapy.

If advanced malignant mesothelioma is found in the peritoneum, treatment may be one of the following:

  • Surgery to remove the tumor followed by hyperthermic intraperitoneal chemotherapy.
  • Chemotherapy placed directly into the peritoneum to shrink the tumor and keep fluid from building up.

Check the list of NCI-supported cancer clinical trials that are now accepting patients with advanced malignant mesothelioma. For more specific results, refine the search by using other search features, such as the location of the trial, the type of treatment, or the name of the drug. Talk with your doctor about clinical trials that may be right for you. General information about clinical trials is available from the NCI website.

Recurrent Malignant Mesothelioma

Treatment of recurrent malignant mesothelioma may be one of the following:

  • Surgery to remove part of the chest wall.
  • Chemotherapy, if it was not given as initial treatment.
  • A clinical trial of biologic therapy.
  • A clinical trial of targeted therapy.
  • A clinical trial of chemotherapy.
  • A clinical trial of surgery.

Check the list of NCI-supported cancer clinical trials that are now accepting patients with recurrent malignant mesothelioma. For more specific results, refine the search by using other search features, such as the location of the trial, the type of treatment, or the name of the drug. Talk with your doctor about clinical trials that may be right for you. General information about clinical trials is available from the NCI website.

To Learn More About Malignant Mesothelioma

For more information from the National Cancer Institute about malignant mesothelioma, see the following:

  • Malignant Mesothelioma Home Page
  • Drugs Approved for Malignant Mesothelioma
  • Asbestos Exposure and Cancer Risk

For general cancer information and other resources from the National Cancer Institute, see the following:

  • About Cancer
  • Staging
  • Chemotherapy and You: Support for People With Cancer
  • Radiation Therapy and You: Support for People With Cancer
  • Coping with Cancer
  • Questions to Ask Your Doctor about Cancer
  • For Survivors and Caregivers

About This PDQ Summary

About PDQ

Physician Data Query (PDQ) is the National Cancer Institute's (NCI's) comprehensive cancer information database. The PDQ database contains summaries of the latest published information on cancer prevention, detection, genetics, treatment, supportive care, and complementary and alternative medicine. Most summaries come in two versions. The health professional versions have detailed information written in technical language. The patient versions are written in easy-to-understand, nontechnical language. Both versions have cancer information that is accurate and up to date and most versions are also available in Spanish.

PDQ is a service of the NCI. The NCI is part of the National Institutes of Health (NIH). NIH is the federal government's center of biomedical research. The PDQ summaries are based on an independent review of the medical literature. They are not policy statements of the NCI or the NIH.

Purpose of This Summary

This PDQ cancer information summary has current information about the treatment of malignant mesothelioma. It is meant to inform and help patients, families, and caregivers. It does not give formal guidelines or recommendations for making decisions about health care.

Reviewers and Updates

Editorial Boards write the PDQ cancer information summaries and keep them up to date. These Boards are made up of experts in cancer treatment and other specialties related to cancer. The summaries are reviewed regularly and changes are made when there is new information. The date on each summary ("Date Last Modified") is the date of the most recent change.

The information in this patient summary was taken from the health professional version, which is reviewed regularly and updated as needed, by the PDQ Adult Treatment Editorial Board.

Clinical Trial Information

A clinical trial is a study to answer a scientific question, such as whether one treatment is better than another. Trials are based on past studies and what has been learned in the laboratory. Each trial answers certain scientific questions in order to find new and better ways to help cancer patients. During treatment clinical trials, information is collected about the effects of a new treatment and how well it works. If a clinical trial shows that a new treatment is better than one currently being used, the new treatment may become "standard." Patients may want to think about taking part in a clinical trial. Some clinical trials are open only to patients who have not started treatment.

Clinical trials are listed in PDQ and can be found online at NCI's website. Many cancer doctors who take part in clinical trials are also listed in PDQ. For more information, call the Cancer Information Service 1-800-4-CANCER (1-800-422-6237).

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The best way to cite this PDQ summary is:

PDQ® Adult Treatment Editorial Board. PDQ Malignant Mesothelioma Treatment. Bethesda, MD: National Cancer Institute. Updated <MM/DD/YYYY>. Available at: https://www.cancer.gov/types/mesothelioma/patient/mesothelioma-treatment-pdq. Accessed <MM/DD/YYYY>. [PMID: 26389166]

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Last Revised: 2016-10-21

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