A case of a systemic cancer-associated thrombosis successfully treated with multi-disciplinary treatment including anticoagulation therapy and anticancer drug therapy.

Anticoagulation therapy is a standard treatment for CAT; however, some cases of CAT do not successfully improve despite anticoagulation therapy, partly due to a highly active cancer status. Anticancer drug therapy might increase the risk of a thrombosis, whereas it could improve the activity of the cancer status leading to a decreased risk of a thrombosis. A multi-disciplinary therapy might be a reasonable option especially for CAT with a highly active cancer status.