Table 2.

Comparison of postnatal radiologic findings between cBA and CC type Ia/b

Postnatal radiologic findings	cBA (n=10)	CC (n=11)	P-value
US finding
Triangular cord (mm)	5.2 (4.2-6.9)	3.1 (1.9-5.0)	<0.001
HA diameter (mm)	2.3 (2.0-3.0)	1.3 (0.5-2.5)a)	0.007
Collapsed GB	4/10 (40.0)	2/11 (18.2)	0.361
GB mucosal irregularity	10/10 (100)	0/11 (0)	<0.001
Cyst size (cm)	2.0 (0.7-3.4)	3.4 (2.0-6.1)	0.002
Sludge in the cyst	1/10 (10.0)	6/11 (54.5)	0.063
MRI finding
Triangular cord (mm)	5.2 (3.9-9.4)	3.5 (2.1-5.0)	<0.001
HA diameter (mm)	2.8 (2.3-3.6)	2.5 (1.2-3.0)	0.029
PV diameter (mm)	4.4 (2.7-5.3)	5.6 (4.4-7.2)	0.001
Collapsed GB	4/10 (40.0)	1/11 (9.1)	0.149
GB length (cm)	3.2 (0.9-5.8)	2.9 (2.2-4.2)	0.809
GB width (cm)	0.6 (0.3-0.9)	0.8 (0.6-1.7)	0.024
GB ratio	4.7 (2.8-7.3)	3.7 (2.5-4.7)	0.016
Cyst size (cm)	2.1 (0.6-4.3)	3.6 (2.7-7.2)	0.001
Pancreas head bile duct visualization	0/10 (0)	11/11 (100)	<0.001
Spleen size (cm)	5.9 (3.8-7.7)	5.4 (3.6-7.5)	0.282
Splenomegaly	2/10 (20.0)	1/11 (9.1)	0.586

Values are presented as median (range) or number/total number (%).

P-values from the Mann-Whitney U test or the Fisher exact test.

cBA, cystic biliary atresia; CC, choledochal cyst; US, ultrasonography; HA, hepatic artery; GB, gallbladder; MRI, magnetic resonance imaging; PV, portal vein.

^a)n=The number of patients with hepatic diameter measurement was seven.