[Impact of surgery for residual tumors after chemotherapy].

Metastases are a feature not only of local tumor manifestation but also of systemic disease. Thus, the question arises regarding the extent to which local therapy contributes to a systemic state of disease. With renal cell carcinoma, resection of pulmonary metastases is a common operation. Other sites should be considered individually. Only a well-defined subset of patients with metastasized urothelial carcinoma benefit from the resection of their metastases.