Extrapleural Pneumonectomy (EPP)
The extrapleural pneumonectomy is a surgery to remove the affected lung in patients with pleural mesothelioma. The EPP may extend life expectancy and improve a patientʼs quality of life.
Surgery for Pleural Mesothelioma
The extrapleural pneumonectomy (EPP) was the first surgical treatment option that significantly increased survival times for pleural mesothelioma patients. This surgery is generally used in early stage patients, but may be used in later stages in special cases.
Key Points About the EPP
The extrapleural pneumonectomy was developed and perfected over a 30 year period by Dr. David Sugarbaker, during his time at Brigham and Women’s Hospital.
The ideal candidate for an EPP is a patient with a stage 1 or 2 diagnosis who is in good overall health (good cardiac function, liver function, etc.).
A study conducted by Dr. Sugarbaker concluded patients having the surgery had an additional 19 month survival time after having an EPP. The average life expectancy of a typical mesothelioma patient is approximately a year or less.
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Who is Eligible For an EPP?
Patients are carefully evaluated under several criteria before they are considered for an EPP. Patients must be healthy enough not only to undergo the surgery, but also to undergo the extensive recovery process.
Under the standards of Brigham and Womenʼs Hospital, overall health and functionality is more important than age. Although a patient may not be able carry on with normal day-to-day activities without experiencing symptoms, they may still be eligible for surgery. The minimum requirement of patients to undergo this surgery is that they are still able to care for themselves.
Having healthy, normal heart function is also imperative as the heart and lungs work together to support the breathing process. Normal kidney and liver function is also required.
Patient Eligibility Tests
- Age and performance assessment
- Liver function tests
- Pulmonary function tests/quantitative ventilation-perfusion scan
- Echocardiogram and electrocardiogram
- CT-scan and MRI of chest
- Pleural biopsy
Diagnosis is also important in selecting patients for an EPP. This surgery is typically performed on patients in early stages of pleural mesothelioma. It is rare, though not unheard of, for patients diagnosed past stage 2 pleural mesothelioma to be admitted for an EPP.
The purpose of the surgery is to prevent the cancer from spreading. Therefore, if the cancer has already spread, the risks may outweigh the benefits of having the procedure. These requirements are important to protect ineligible patients from potentially fatal surgical complications.
Finding Surgical Treatment in VA Healthcare System
For patients seeking treatment through the VA, it is important to find a specialist in the VA healthcare system because general oncologists don’t have enough experience with mesothelioma to treat it effectively. Oftentimes, veterans are incorrectly told they aren’t eligible for procedures like the EPP because of their general oncologist’s lack of experience.
Some of the benefits of seeing a specialist through the VA may include:
- Access to specialized treatments, such as the extrapleural pneumonectomy, that may not be offered by general oncologists
- Financial assistance for travel and lodging
- Qualification for cost-free treatment or the option for private health insurance to reduce or eliminate copay
There are many general oncologists in the VA, but only two mesothelioma specialists. Additionally, only one uses the extrapleural pneumonectomy in his treatment plan—Dr. Avi Lebenthal at the Boston VA.
Veterans within the VA system can see Dr. Lebenthal if they are interested in the life-extending EPP. Dr. Lebenthal is a highly experienced mesothelioma specialist who also serves patients at the nearby Brigham and Women’s Hospital, which collaborates with the Boston VA in treating patients. Veterans getting treatment at the Boston VA get the same quality of treatment as patients in the top cancer centers in the country.
The entire surgical process of an EPP is complex, but it can be summed up in 5 steps. This procedure has taken decades to develop and involves intricate steps to cauterize and redirect blood vessels to protect the patient from losing too much blood. It also takes expert surgical management to reduce trauma to the patient and decrease recovery time.
Before the procedure begins, the patient is placed under general anesthesia, and an endotracheal tube is inserted in the trachea. This allows the airway to the healthy lung to remain open, while simultaneously allowing the diseased lung to be collapsed. The time it takes to complete the procedure varies with each patient, but EPPs have been completed in as few as three hours.
5 Steps of an Extrapleural Pneumonectomy
- 1Incision–An incision is made to enter the chest cavity from the back to under the pectoral muscle. The sixth rib is removed to allow surgeons appropriate access.
- 2Extrapleural dissection–The pleura and pericardium are separated from the diaphragm and the chest wall.
- 3Division of pulmonary vessels–Blood vessels and arteries supplying the affected lung are severed and redirected.
- 4Removal of the affected areas–The lung, pleura, pericardium, part of the diaphragm and affected lymph nodes are removed.
- 5Reconstruction–The diaphragm and pericardium are reconstructed with Gore-Tex. (Gore-Tex is breathable, waterproof, and pliable.)
In cases where intraoperative therapy is used, heated, liquid chemotherapy is used to bathe the chest cavity after removal of the lung and before reconstruction.
This allows the highest concentration of chemotherapy possible to come into direct contact with the cancer cells. It also creates the ability to apply much higher dosages of chemotherapy without causing substantial side effects. The purpose of this added procedure is to attack any remaining microscopic mesothelioma cells left over in the chest cavity.
In addition, healthy cells are protected by injecting a cytoprotective agent into the patientʼs bloodstream prior to the intraoperative chemotherapy.