Pleural mesothelioma is cancer of the pleura, the thin lining that surrounds the lungs and the inside of the chest wall. It is the most common form of mesothelioma: the American Cancer Society reports that roughly 3 out of 4 mesotheliomas start in the pleura. Its primary cause is asbestos exposure, usually decades earlier, per the National Cancer Institute. For the full medical overview, start with our mesothelioma guide.
This page is informational, not medical advice. Decisions about testing and treatment belong with your care team.
What is the pleura, and what does this cancer do?
The pleura is a two-layer membrane: one layer wraps the lung, the other lines the chest wall, and a small amount of fluid between them lets the lung move as you breathe. Pleural mesothelioma grows in this lining. As the ACS describes, the tumor tends to spread along the pleural surface, thickening the lining and often causing fluid to build up, which is what squeezes the lung and makes breathing hard.
What are the symptoms of pleural mesothelioma?
Per the American Cancer Society, the common signs are shortness of breath, pain in the chest or lower back, a persistent cough, hoarseness, trouble swallowing, fatigue, and unexplained weight loss. Fluid around the lung, called a pleural effusion, is frequently the finding that starts the whole investigation. These symptoms mimic ordinary illnesses, which is why diagnosis often comes months after they begin; our symptoms page covers that problem in depth.
Who gets pleural mesothelioma?
Overwhelmingly, people who breathed asbestos fibers at work, and the family members who lived with them. The NCI fact sheet identifies asbestos as the main risk factor and puts the typical gap between exposure and disease at 20 to 50 years. In Pennsylvania that history runs through shipyards, steel mills, refineries, rail shops, power plants, and the construction trades. Most people diagnosed today were exposed in the 1950s through the 1980s, and the ACS notes that most patients are older adults, with men diagnosed more often, reflecting who held those jobs.
How is it diagnosed and treated?
Diagnosis moves from imaging to fluid testing to a biopsy, which the ACS describes as the only way to confirm the disease; the full sequence is on our diagnosis page. Once confirmed, pleural mesothelioma is staged 1 through 4 under the formal system explained on our stages page.
Treatment draws on four categories: surgery, chemotherapy, radiation, and immunotherapy, per the National Cancer Institute’s treatment summary (NCI PDQ). Which combination fits depends on the stage, the cell type found in the biopsy, and overall health. Our treatment overview explains each category and what questions to bring to the oncologist. Honest survival numbers, with their limits explained, are on our prognosis page.
What happens with the fluid around the lung?
Pleural effusion, fluid collecting between the lung and the chest wall, is one of the defining features of this disease, and it is often what sends someone to the emergency room in the first place. The American Cancer Society describes thoracentesis, drawing the fluid off with a needle, both to test it for cancer cells and to relieve the pressure that makes breathing hard. When fluid keeps coming back, the ACS describes procedures that drain it on an ongoing basis or seal the pleural space to stop it from refilling. These are symptom-control measures rather than cancer treatments, and the ACS presents them as a standard part of care at any stage. For families, the practical point is that breathlessness is treatable, and it is worth raising with the care team rather than enduring.
How is pleural mesothelioma different from lung cancer?
They are different diseases. Pleural mesothelioma grows in the lining around the lung; lung cancer grows in the lung tissue itself. The distinction is made by the pathologist from the biopsy, and it matters for treatment and for the claim, because the two diseases travel different legal paths. Asbestos causes both: see our asbestos lung cancer page for that disease, and the asbestos diseases hub for the full cluster.
What this means for your family
Pleural mesothelioma is the disease at the center of asbestos litigation, and the claim path for it is well worn. A confirmed diagnosis generally opens Pennsylvania’s two-year filing window (42 Pa. C.S. § 5524). Compensation can come from lawsuits against the companies responsible for the exposure and from asbestos bankruptcy trust funds, which hold roughly $30 billion set aside for victims per the U.S. Government Accountability Office (GAO-11-819). Philadelphia has run a dedicated asbestos docket since 1986 (In re: Asbestos Litigation, No. 1986-00001), where Michael C. Schafle, Esq. is counsel of record on asbestos matters. These cases are handled here, in Philadelphia, by a lawyer who works this docket.
If pleural mesothelioma has been diagnosed in your family, request a free case review and learn exactly where your case stands.