Endoscopic papillary large balloon dilation after limited sphincterotomy for difficult biliary stones

Table 1 Baseline characteristics of the patients

Mean age (yr)	68 ± 10
Gender (M/F)	7/23
Stones
Single	10 (33%)
Multiple	20 (67%)
Median diameter (mm)	17(12-30)
Periampullary diverticulum	7 (23%)

Table 2 Stone removal after endoscopic balloon dilatation according to stone size and number

		Complete removal(with one ERCP)	Incomplete removal/failure	P
Stones	Single	9 (90%)	1 (10%)	NS
	Multiple	16 (80%)	4 (20%)
Median diameter (mm)		15	23	0.001

ERCP: Endoscopic retrograde cholangiopancreatography; NS: Not significant.

Table 3 Use of lithotripsy according to stone size and number

		Use of lithotripsy		P
		Yes	No
Stones	Single	1 (10%)	9 (90%)	0.02
	Multiple	5 (25%)	15 (75%)
Median diameter (mm)		16	17	NS

NS: Not significant.