Mesothelial proliferation is a term used by pathologists to describe an increase in the number of mesothelial cells. Mesothelial cells form a thin layer that lines the membranes around the lungs (pleura), abdomen (peritoneum), heart (pericardium), and testis (tunica vaginalis). A mesothelial proliferation can be benign (noncancerous) or, less commonly, part of a malignant (cancerous) process …
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Mesothelial hyperplasia is a noncancerous condition in which the cells that line the membranes around the lungs, abdomen, heart, or testis—called mesothelial cells—begin to grow or multiply more than usual. These membranes are known as the pleura (around the lungs), peritoneum (around the abdominal organs), pericardium (around the heart), and tunica vaginalis (around the testis). …
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Mesothelioma is a cancer that starts in mesothelial cells — the specialized cells that form a thin lining around internal organs. This lining, called the mesothelium, is found around the lungs (the pleura), around the abdominal organs (the peritoneum), and around the heart (the pericardium). The large majority of mesotheliomas — roughly 75–80% — arise …
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