Peritoneal Mesothelioma Not Caused by Asbestos Malignant peritoneal mesothelioma forms in the abdominal lining. It is less prevalent than pleural mesothelioma, and it is more common in women than men. People with peritoneal mesothelioma often suffer from vague symptoms like abdominal pain constipation, weight loss or diarrhoea. A mesothelioma expert
