Table 2.

Renal US findings after successful EBD.

	Preoperatory	Early p.o. US	Long-term p.o. US	p-value
Mean pelvis diameter (mm) (n = 74)	19.2 ± 4.9	10.3 ± 5.5	5.2 ± 3.5	< 0.001 (T-test)
Mean ureteral diameter (mm) (n = 74)	14.9 ± 2.9	9.2 ± 4.2	6.6 ± 6.5	< 0.001 (T-test)
Median calyces diameter (mm) (n = 24)	12.5 (8–21)	9.5 (0–14)	5 (0–10)	< 0.05 (Wilcoxon test)
Mean parenchyma thickness (mm) (n = 49)	4.1 ± 1.6	5.5 ± 2.2	8.3 ± 2.4	< 0.001(T-test)

Early postoperative US was performed 3 months after JJ stent removal. Long-term postoperative US was the last on the follow up (1.5–13.5 years).