Metastatic potential in renal cell carcinomas

摘要

BACKGROUND: Renal cell carcinoma (RCC) represents 2-3% of all malignancies and accounts for approximately 90% of all kidney malignancies. An increasing proportion of RCCs are discovered incidentally, and the average tumor diameter at diagnosis has decreased over the last few decades. Small RCCs have often been regarded by many as relatively harmless. OBJECTIVE: The objective was to evaluate the incidence of local T-category distribution and lymph node and distant metastases in relation to tumor size in RCCs