Pleural mesothelioma is cancer of the pleura, the thin lining that surrounds the lungs and covers the inside of the chest wall. It is the most common type of mesothelioma. The American Cancer Society reports that about 3 out of 4 mesotheliomas begin in the pleura. According to the National Cancer Institute, the main cause is asbestos exposure, which typically happens many years before diagnosis. For a complete medical overview, start with our mesothelioma guide.
This page is for general information and is not medical advice. Decisions about testing and treatment should be made with your care team.
How Pleural Mesothelioma Affects the Lungs
The pleura is a two-layer membrane. One layer wraps around the lung, and the other lines the chest wall. A small amount of fluid between them allows the lungs to move smoothly as you breathe. Pleural mesothelioma grows within this lining. The American Cancer Society explains that the tumor tends to spread along the pleural surface, thickening the lining and often causing fluid to build up. That pressure on the lung is what makes breathing difficult.
Pleural Mesothelioma Symptoms and Early Warning Signs
The American Cancer Society lists these common signs:
- shortness of breath
- pain in the chest or lower back
- a persistent cough
- hoarseness
- trouble swallowing
- fatigue
- unexplained weight loss
A buildup of fluid around the lung, called a pleural effusion, is often the finding that starts the medical investigation. Because these symptoms resemble everyday illnesses, diagnosis can come months after they first appear. Our symptoms page covers this challenge in more detail.
Asbestos Exposure and Pleural Mesothelioma Risk in Pennsylvania
Most people who develop pleural mesothelioma breathed in asbestos fibers on the job. Some are family members who were exposed to fibers carried home on work clothes. The National Cancer Institute identifies asbestos as the primary risk factor. The American Cancer Society notes that the disease usually appears decades after exposure.
In Pennsylvania, that exposure history runs through shipyards, steel mills, refineries, rail shops, power plants, and the construction trades. Many people diagnosed today were exposed during the middle decades of the twentieth century. The American Cancer Society reports that most patients are older adults and that men are diagnosed more often, reflecting those who hold those jobs.
How Pleural Mesothelioma Is Diagnosed and Staged
Diagnosis usually moves from imaging to fluid testing to a biopsy. The American Cancer Society describes a biopsy as the only way to confirm the disease. Our diagnosis page walks through the full process. Once confirmed, pleural mesothelioma is staged from 1 to 4 under a formal system explained on our stages page.
Pleural Mesothelioma Treatment Options
According to the National Cancer Institute’s treatment summary (NCI PDQ), the main approaches are surgery, chemotherapy, radiation therapy, and immunotherapy. Clinical trials may also be an option. The right combination depends on the stage, the cell type found in the biopsy, and the patient’s overall health.
Our treatment overview explains each approach and the questions to bring to the oncologist. For honest survival information and the limits of those numbers, see our prognosis page.
Pleural Effusion Treatment: Managing Fluid Around the Lungs
Pleural effusion, fluid collecting between the lung and the chest wall, is one of the defining features of this disease. It is often what first sends someone to the emergency room.
The American Cancer Society describes thoracentesis, a procedure that draws off fluid with a needle. It serves two purposes: testing the fluid for cancer cells and relieving the pressure that makes breathing hard. When fluid keeps returning, the ACS describes options that drain it on an ongoing basis or seal the pleural space so it cannot refill. These procedures control symptoms rather than treat the cancer itself, and they are a standard part of care at any stage.
For families, the key takeaway is that breathlessness can be treated. It is worth raising with the care team rather than enduring.
Pleural Mesothelioma vs. Lung Cancer: Key Differences
These are two different diseases:
- Pleural mesothelioma grows in the lining around the lung.
- Lung cancer grows in the lung tissue itself.
A pathologist makes the distinction from the biopsy. That distinction matters for treatment and for any legal claim, because the two diseases follow different legal paths. Asbestos can cause both. See our asbestos diseases hub for related conditions.
Pleural Mesothelioma Lawsuits and Compensation in Philadelphia
Pleural mesothelioma is the disease at the center of asbestos litigation, and the legal path for these claims is well established. Pennsylvania law sets strict time limits for filing once a diagnosis is made, so speaking with an attorney early helps protect your family’s options.
Compensation may come from two sources:
- lawsuits against the companies responsible for the exposure
- asbestos bankruptcy trust funds, which the U.S. Government Accountability Office has reported hold billions of dollars set aside for victims
Philadelphia has maintained a dedicated asbestos litigation program for decades. Michael C. Schafle, Esq. handles asbestos cases on this docket. Your case would be handled here in Philadelphia by a lawyer who knows this court.
If pleural mesothelioma has been diagnosed in your family, request a free case review to understand your legal options.