Fig. 2From: Presence of transient hydronephrosis immediately after surgery has a limited influence on renal function 1 year after ileal neobladder constructionPreoperative and postoperative hydronephrosis grades. a. The overall hydronephrosis grades in 128 renal units were increased significantly 1 month after surgery (P < 0.001), but improved significantly 1 year after surgery (P < 0.001). b. The hydronephrosis grades in the low group did not changed significantly (P = 0.3145). The hydronephrosis grades in the intermediate and high groups were significantly increased 1 month after surgery (P < 0.0001), but improved significantly 1 year after surgery (P < 0.001). Statistical analyses were performed using Wilcoxon matched-pairs signed rank testBack to article page