Table 3.

Scoring and distribution of hydronephrosis in lean control (LC) and zucker diabetic fatty (ZDF) rat kidneys at 16 and 36 weeks of age

	Lean control	ZDF	Lean control	ZDF
	16 weeks of age	16 weeks of age	36 weeks of age	36 weeks of age
Normal	5 (71)	1 (14)	0 (0)	0 (0)
Mild	2 (29)	5 (71)	2 (28)	1 (10)
Moderate	0	1 (14)	5 (77)	6 (60)
Severe	0	0	0 (0)	3 (30)

Briefly, kidney sections were assigned a value of either; (0) minimal or no spacing between the papilla and calyx, (1) definitive but mild calyceal spacing with normal papillary shape, (2) calyceal dilatation and compression of the papilla, and (3) extreme distension of the calyx, compaction of the lateral cortex and severe papillary dilatation. Values are presented as frequency with percent of total animals in parentheses.