These Mesothelioma Web Pages are intended for patients with mesothelioma, the relatives and friends of mesothelioma patients, mesothelioma care-givers and others interested in mesothelioma. The information presented includes: General definitions of mesothelioma; different types and clinical course of mesothelioma including mesothelioma of pleural and peritoneal cavities, miscellaneous mesotheliomas; how mesothelioma is diagnosed; determining location and spread of mesothelioma; surgical treatment of mesothelioma; radiotherapy for mesothelioma; and chemotherapy for advanced mesothelioma. The resources available for management of mesothelioma at Columbia University's Herbert Irving Comprehensive Cancer Center include a guide to conventional mesothelioma therapy and new experimental treatment options for mesothelioma; pain and symptom control in mesothelioma, and psychosocial support for mesothelioma patients. This mesothelioma website is evolving, and we would appreciate suggestions for making it more available and useful.