Peritoneal mesothelioma is the second most common type of malignant mesothelioma.  It occurs in the protective lining of the abdomen called the peritoneum.  With 400 new cases diagnosed per year, peritoneal mesothelioma makes up 15-20% of new cases of malignant mesothelioma diagnosed annually. Like other mesotheliomas, peritoneal mesothelioma has been linked to asbestos exposure. Current asbestos…