Figure 3From: Serum level and immunohistochemical expression of vascular endothelial growth factor for the prediction of postoperative recurrence in renal cell carcinomaKaplan-Meier analysis of recurrence-free survival rates: comparison between patients positive and negative for VEGF expression using IHC. The solid line represents the IHC-positive group (n = 26), and the dotted line represents the IHC-negative group (n = 57). The IHC-positive group had a significantly increased risk of recurrence compared with the IHC-negative group (P = 0.044)Back to article page