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

Table 2 Characteristics of patients with and without common bile duct stone recurrence

	Recurrence (n = 27)	Non-recurrence (n = 111)	P value
Sex (male/female)	21/6	86/25	0.97
Age (mean ± SD, yr)	71.9 ± 10.2	72.4 ± 10.6	0.82
PAD, n (%)	12 (44.4)	28 (25.2)	0.05
CBD diameter (mean ± SD, cm)	1.5 ± 0.6	1.4 ± 0.4	0.29
CBD diameter ≥ 1.2 cm, n (%)	27 (100.0)	83 (74.8)	< 0.01
CBD diameter ≥ 1.5 cm, n (%)	23 (85.2)	50 (45.0)	< 0.01
Largest CBD stone diameter ≥ 1.2 cm, n (%)	14 (51.9)	54 (48.6)	0.77
CBD stone number ≥ 2, n (%)	13 (48.1)	43 (38.7)	0.37
Muddy stones, n (%)	4 (14.8)	16 (14.4)	1.00
Initial ampullary intervention, n (%)
EST	2 (7.4)	6 (5.4)	1.00
EPBD/EPLBD	15 (55.6)	64 (57.7)	0.84
ESBD	6 (22.2)	22 (19.8)	0.78
CBD morphology, n (%)			< 0.01
Straight type	4 (14.8)	65 (58.6)
S type	12 (44.4)	10 (9.0)
Polyline type	11 (40.7)	36 (32.4)
Cholecystectomy, n (%)	3 (11.1)	5 (4.5)	0.39
Procedure time (mean ± SD, min)	44.9 ± 22.7	36.7 ± 18.4	0.05

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.