Common bile duct morphology is associated with recurrence of common bile duct stones in Billroth II anatomy patients

Table 3 Characteristics of patients with different common bile duct morphologies

	Straight type (n = 69)	S type (n = 22)	Polyline type (n = 47)	P value
Sex (male/female)	49/20	18/4	40/7	0.19
Age (mean ± SD, yr)	72.6 ± 10.9	71.8 ± 10.6	72.0 ± 10.0	0.93
PAD: n (%)	20 (29.0)	9 (40.9)	11 (23.4)	0.33
CBD diameter (mean ± SD, cm)	1.5 ± 0.5	1.8 ± 0.6	1.6 ± 0.5	< 0.01
CBD diameter ≥ 1.2 cm, n (%)	49 (71.0)	22 (100.0)	39 (83.0)	< 0.01
CBD diameter ≥ 1.5 cm, n (%)	32 (46.4)	16 (72.7)	25 (53.2)	0.10
Largest CBD stone diameter ≥ 1.2 cm, n (%)	32 (46.4)	10 (45.5)	26 (55.3)	0.59
CBD stone number ≥ 2, n (%)	27 (39.1)	13 (59.1)	16 (34.0)	0.13
Muddy stones, n (%)	12 (17.4)	2 (9.1)	6 (12.8)	0.68
Initial ampullary intervention, n (%)
EST	3 (4.3)	2 (9.1)	3 (6.4)	0.62
EPBD/EPLBD	39 (56.5)	14 (63.6)	26 (55.3)	0.80
ESBD	15 (21.7)	3 (13.6)	10 (21.3)	0.78
Cholecystectomy, n (%)	3 (4.3)	2 (9.1)	3 (6.4)	0.62
Procedure time (mean ± SD, min)	34.9 ± 15.7	49.1 ± 27.8	38.4 ± 18.6	0.07

PAD: Periampullary diverticulum; CBD: Common bile duct; EST: Endoscopic biliary sphincterotomy; EPBD: Endoscopic papillary balloon dilation; EPLBD: Endoscopic papillary large balloon dilation; ESBD: Endoscopic biliary sphincterotomy with balloon dilation.