[Partial kidney resection in kidney tumors--indications and results]

With the use of ultrasonography synchronous and asynchronous bilateral renal tumors and tumors in single kidneys are diagnosed more frequently also in the stage I. Organ-preserving operations as partial kidney resection or tumor enucleation combined with contralateral radical nephrectomy are used stage-related successfully. Hypothermia in vivo or ex vivo seems to be advantageous in some cases. The tumor stage (according to Robson) and an optimal operative technique are of significant prognostic importance. In the own material of 15 bilateral renal tumors and 5 tumors in single kidneys only 5 patients do survive currently without tumor signs. The other 15 patients were at the time of operation in the tumor stages III and IV. Therefore, the diagnosis should made earlier, especially by more frequently and qualified ultrasonographic examinations.