Endoscopic papillary large balloon dilation in patients with periampullary diverticula

Table 1 Baseline characteristics of patients n (%)

Variable	Total (n = 223)	PAD group (n = 93)	Non-PAD group (n = 130)	P value
Mean age (yr)	72.0 ± 10.4 (39-92)	75.2 ± 8.8 (51-92)	69.7 ± 10.9 (39-90)	0.000
Sex (male/female)	122:101 (54.7:45.3)	46:47 (49.5:50.5)	76:54 (58.5:41.5)	0.220
BMI (kg/m2)	22.6 ± 3.1	22.5 ± 2.8	22.6 ± 3.3	0.947
Billroth II gastrectomy	26 (11.7)	7 (7.5)	19 (14.6)	0.138
Large balloon dilation
With ES	132 (59.2)	59 (63.4)	73 (56.2)	0.334
Without ES	91 (40.8)	34 (36.6)	57 (43.8)
Precutting with needle knife	25 (11.2)	9 (9.7)	16 (12.3)	0.668
CBD stones
Mean diameter of stone (mm)	15.9 ± 5.8 (10-40)	16.4 ± 6.0 (10-37)	15.5 ± 5.7 (10-40)	0.252
Number of stones
1/2/≥ 3	119/35/68	49/15/29	70/20/39	0.835
Types of stones
Brown/black/cholesterol	182/33/2 (83.9/15.2/0.9)	82/9/0 (90.1/9.9/0)	100/24/2 (79.4/19.0/1.6)	0.144
Mean diameter of CBD (mm)	19.9 ± 5.3 (10-37)	20.0 ± 5.0 (10-35)	19.8 ± 5.4 (10-37)	0.743
Distal CBD angulation (degree)	140.6 ± 21.9	142.1 ± 21.8	139.4 ± 22.0	0.444
Balloon dilation
Dilating balloon size (mm)	15.6 ± 2.4 (12-20)	15.5 ± 2.4 (12-20)	15.8 ± 2.4 (12-20)	0.374
Duration of ballooning (s)	38.3 ± 16.1(10–60)	36.1 ± 15.0 (10–60)	39.9 ± 16.8 (10–60)	0.081

Values are presented as mean ± SD (range). PAD: Periampullary diverticula; BMI: Body mass index; ES: Endoscopic sphincterotomy; CBD: Common bile duct.