We present our casuistry of 17 embolized kidney adenocarcinomas with fibrin sponge and/or metal spirals. In 13, the embolization was preoperative and in 4 palliative. In two out of the latter group a control aortogram revealing no rechanneling of the renal artery, was performed several weeks later. We mention the clinico-biochemical disorders caused by embolization and the advantages of the different kinds of emboles used and we come to the conclusion that the procedure considerably facilitates the surgical removal and is of value as a palliative method in certain circumstances.