Pericardial Mesothelioma Mesothelioma is a type of cancer that develops in the tissue surrounding the lungs, the stomach, the testes, or the heart. One of the least common forms -- pericardial mesothelioma -- occurs in the thin lining that protects the heart, called the pericardium. Like other forms of mesothelioma, this cancer is attributed to asbestos exposure and is very difficult to diagnose. It is extremely rare, with only about 200 cases known to doctors, representing approximately 1% to 10% of all mesothelioma diagnoses. While treatment is challenging due to the disease's proximity to the heart, and there is no cure for mesothelioma, early diagnosis still gives patients the best chance to prolong their lives. We hope the information you find here will help you and your loved ones learn more about mesothelioma. It is important to speak with your doctor if you experience bothersome, persistent symptoms and have been exposed to asbestos. HOW DOES PERICARDIAL MESOTHELI...