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

Table 4 Characteristics of patients with single recurrence and multiple recurrences

	Single recurrence (n = 20)	Multiple recurrences (n = 7)	P value
Sex (male/female)	15/5	6/1	1.00
Age (mean ± SD, yr)	72.7 ± 8.9	69.4 ± 13.8	0.48
PAD, n (%)	11 (55.0)	1 (14.3)	0.09
CBD diameter (mean ± SD, cm)	1.9 ± 0.4	2.0 ± 0.8	0.73
CBD diameter ≥ 1.2 cm, n (%)	20 (100.0)	7 (100.0)
CBD diameter ≥ 1.5 cm, n (%)	18 (90.0)	5 (71.4)	0.27
Largest CBD stone diameter ≥ 1.2 cm, n (%)	9 (45.0)	5 (71.4)	0.39
CBD stone number ≥ 2, n (%)	10 (50.0)	3 (42.9)	1.00
Muddy stones, n (%)	4 (20.0)	0 (0.0)	0.55
Initial ampullary intervention, n (%)
EST	2 (10.0)	0 (0.0)	1.00
EPBD/EPLBD	11 (55.0)	4 (57.1)	1.00
ESBD	4 (20.0)	2 (28.6)	0.63
CBD morphology, n (%)			1.00
Straight type	3 (15.0)	1 (14.3)
S type	9 (45.0)	3 (42.9)
Polyline type	8 (40.0)	3 (42.9)
Cholecystectomy, n (%)	3 (15.0)	0 (0.0)	0.55
Procedure time (mean ± SD, min)	45.8 ± 17.0	42.4 ± 36.0	0.82
Follow-up period (mean ± SD, yr)	19.0 ± 10.6	20.1 ± 7.7	0.80

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.