Mesothelioma


Typically caused by asbestos exposure or smoking, this rare cancer is diagnosed in around 3,000 people in the United States each year. Mesothelioma forms in the lining of internal organs, most commonly in either the lungs or the peritoneum. The three types of mesothelioma include the epithelioid type, which responds well to chemotherapy, the sarcomatoid type, which is the most difficult to treat, and the biphasic type, which contains both epithelioid and sarcomatoid characteristics.