[Follow-up after radical nephrectomy and nephron sparing surgery of kidney tumors].

Renal cell carcinoma represents more than 90 % of all malignant kidney tumors. International guidelines for follow-up examinations after surgery for kidney tumors are still incomplete. New challenges are arising because of growing use of nephron sparing surgery. According to well-known prognosticators risk-adapted follow-up strategies may be established that are stratified into 3 risk groups.