Pericardium

The pericardium is the thin, two-layered sac that surrounds and protects the heart. It contains a small amount of lubricating fluid that lets the heart beat smoothly inside the chest. When this sac becomes inflamed, thickened, or develops tumors, heart function can be affected.

Origin

From the Greek peri- meaning "around" and kardia meaning "heart." The term has been used in anatomy since the writings of Galen in the 2nd century and remains the standard medical name for the heart's outer membrane.

Significance in Asbestos Context

The pericardium is one of the serosal membranes, like the pleura around the lungs and the peritoneum in the abdomen, where asbestos fibers can cause mesothelioma. Pericardial mesothelioma is extremely rare (roughly 1% of mesothelioma cases) but is recognized as asbestos-related and is included in the Helsinki Criteria. Patients with this diagnosis often face delayed recognition because symptoms like shortness of breath, chest pain, irregular heartbeat, and fluid around the heart (pericardial effusion) can be mistaken for more common heart disease. If you have been diagnosed with pericardial mesothelioma, your medical records documenting imaging, pericardiocentesis (fluid drainage), and biopsy results will be central both to your treatment plan and to any legal claim, since defendants sometimes dispute whether a rare pericardial tumor is truly mesothelioma versus another cancer.

Example Sentence

After an echocardiogram showed fluid building up around her heart, further testing of the pericardium led to a diagnosis of pericardial mesothelioma.

Related Terms

Pericardial Mesothelioma, Pleura, Peritoneum, Mesothelium, Pericardial Effusion, Helsinki Criteria

Notes

• If you are told you have fluid around the heart (pericardial effusion) with no clear cardiac cause, ask whether cytology of the fluid and a tissue biopsy have been performed to rule out mesothelioma.
• Request that any pericardial fluid or tissue samples be sent for immunohistochemistry (markers like calretinin, WT-1, and D2-40) to distinguish mesothelioma from metastatic cancers and from benign inflammation.
• Preserve all cardiac imaging (echocardiograms, cardiac MRI, CT scans), pericardiocentesis records, and pathology slides. These are the core evidence for both treatment decisions and any legal claim.
• Because pericardial mesothelioma is rare, ask for referral to a mesothelioma specialty center; pathology second opinions from a center experienced with mesothelioma are strongly recommended.