Preliminary exploration of animal models of congenital choledochal cysts

Table 2 Numbers of various degrees of bile duct dilation in each group

Group	No dilation	Mild dilation	Moderate dilation	Severe dilation
	(φ < 1 mm)	(1 mm ≤ φ < 3 mm)	(3 mm ≤ φ < 10 mm)	(φ ≥ 10 mm)
A	0	10	2	0
B	0	5	7	0
C	0	2	8	2
D	11	1	0	0
E-G	36	0	0	0

φ: The maximum diameter of rat bile duct.