Mesothelioma Lung Cancer Asbestos is a known cause of lung cancer, asbestosis and mesothelioma. The majority of mesothelioma cases begin in the lungs. Malignant peritoneal mesothelioma is a rarer form of mesothelioma that begins in the abdominal linings. Like all cancers, mesothelioma is caused by uncontrolled cellular growth. People can