Traditional Chemotherapy:
This traditional approach uses special anti-cancer (cytotoxic) medicines and chemicals to try to kill the malignant cells. Often, it is offered as an additional therapy alongside radical surgery and/or in combination with radiation therapy or immunotherapy, particularly when the cancer has spread beyond an operable area. Many drugs have been tried; however all have met with only limited success against malignant mesothelioma.
The chemotherapeutic agents can be administered either systemically (in the blood stream) or intrapleurally (in the pleural cavity itself.) These cytotoxic drugs are very potent and can have many severe side effects which you should discuss with your doctor.
Radiation Therapy (Radiotherapy)
This treatment involves the localized use of high-dose radiation (like x-rays) on a malignant mesothelioma tumor. Usually, it is not a primary treatment but is used in conjunction with other therapies such as surgical resection and chemotherapy. It is generally used to reduce the size of the symptomatic tumor and help relieve symptoms like pain and shortness of breath.
Factors which can limit the application of this treatment include the volume of the tumor and how near it is to vital organs.
Photodynamic Therapy
Photodynamic therapy (PDT) is a treatment method often used in combination with other treatments, such as drugs or surgery. PDT uses light to kill cancerous cells. Photodynamic therapy is still in an experimental stage for treatment of mesothelioma.
Initially, the patient receives a photosensitizer which collects in cancerous cells but not in healthy cells. (A photosensitizer is a drug which makes malignant cells vulnerable (sensitive) to light of specific wavelengths.) After the cells have been sensitized, fiberoptic cables are placed in the body (usually through open-chest surgery) in order to focus light of just the right frequency on the tumor. This causes the photosensitizer to produce a toxic oxygen molecule which kills the cell.
Surgery
There are two main types of surgical treatment for pleural mesothelioma: extra-pleural pneumonectomy (EPP) and pleurectomy/decortication.
EPP involves the removal of the pleura, diaphragm, pericardium, and the whole lung involved with the tumor. Pleurectomy/decortication involves the removal of the pleura without removing the entire lung.
Which treatment is recommended depends on many factors, including the stage of the tumour.
It is unclear if EPP is more effective than pleurectomy/decortication, and also if either method is significantly more effective than non-surgical options.
Surgery can provide symptomatic relief and sometimes the bulk of the tumor can be removed. Surgery is often used in combination with other treatments (known as multi-modal treatments), but its value is very limited if the tumor is near any vital organs.
