[Sudden death due to pulmonary tumor embolism from testicular tumor: a case report].

A 40-year-old man undergoing treatment for testicular tumor with para-aortic lymph node metastasis was transferred to our department because of pulmonary embolism. Thrombolysis therapy improved his respiratory state and deep venous thrombi disappeared. However, cardiopulmonary arrest occurred suddenly. Autopsy showed tumor cell invasion into the intima of the pulmonary artery and dissection with thrombosis. Thrombi had fresh components above organizing components. Sudden death due to pulmonary tumor embolism from testicular tumor is rare. In this case, the sudden death resulted from thrombosis in the pulmonary artery, not from emboli from the deep vein.