Table 1. Number of Cajal-like cells on lamina propria and muscularis propria of renal pelvis and proximal ureter according to groups.

	Cajal-like cell numbers
	Control Group 32 (26–42)	Study Group 22 (14–28)	P
Renal pelvis lamina propria	32 (26–42)	22 (14–28)	<0.001
Renal pelvis muscularis propria	42 (34–64)	26 (15–36)	<0.001
Proximal ureter lamina propria	24 (20–26)	12 (9–20)	<0.001
Proximal ureter muscularis propria	29 (25–32)	17 (10–23)	<0.001

Data are shown as median (minimum-maximum), Mann Whitney U test.