Table 2.

Ultrasonographic signs in kidneys with and without ureteral obstruction

Ultrasonographic signs	Pyelographic diagnosis
	Obstructed	Non-obstructed
	(n = 46)	(n = 19)
Median (range) renal length (mm)	44 (21–56)	41 (32–51)
Median (range) pelvic diameter (mm)	9 (3–30 mm)	7 (2–24)
Median (range) pelvic diameter as a proportion of renal length (%)	23 (7–81)	19 (6–56)
Subjectively dilated pelvis	46 (100)	19 (100)
Subjectively dilated ureter	39 (85)	14 (74)
Abnormal renal shape	12 (26)	8 (42)
Cortical scars	9 (20)	3 (16)
Abnormal cortical echogenicity	12 (26)	7 (37)
Abnormal medullary echogenicity	10 (22)	7 (37)
Perinephric or peritoneal effusion	14 (30)	7 (37)
Calculi in kidney	18 (39)	10 (53)
Calculi in ureter	27 (59)	14 (74)
Calculi in bladder	8 (17)	2 (11)

Data are n (%) unless otherwise indicated. There are no significant differences between kidneys with and without ureteral obstruction