Peritoneal Mesothelioma Not Caused by Asbestos Malignant peritoneal mesothelioma forms in the lining of the abdomen. It is less prevalent than pleural mesothelioma and it is more common in women than men. The symptoms of peritoneal msothelioma could be vague, such as abdominal discomfort, weight loss, constipation or diarrhoea. A
