Hypernephroma of the right kidney with inferior vena caval and right atrial thrombosis: case study and successful removal.

A case is described in which a neoplastic thrombus extending into the right atrium was removed through a renal vein incision. This procedure can be performed provided the tumor has not infiltrated the walls of the vena cava. The risk of embolic dissemination and cardiocirculatory complications is decreased.