[Clinical and prognostic significance of metastases].

The authors briefly illustrate some biological and epidemiologic characteristics of the malignant urologic tumors; then they describe the modalities of metastasizing underlining that this process is determined not only by hematic and lymphatic dissemination but also by sequential and complex events "metastatic fall", involving multiple guest-tumor intersections to the organotropism of the neoplastic cells and to their intrinsic aggressiveness and to the histological type of tumor. Afterwards the authors analytically analyze the most important malignant neoplasms of the urogenital apparatus either as clinical importance or as statistic incidence.