The value of nephrometry scoring systems in prediction of conversion to radical nephrectomy in patients scheduled for nephron-sparing surgery

Nephrometry scores such as PADUA (1) and RENAL (2) are helpful tools to evaluate the complexity of renal tumors, not only to estimate the risk of complications of partial nephrectomy (PN) (3,4) but also to predict the risk of conversion to radical nephrectomy (cNE) (5).