Efficacy and safety of limited endoscopic sphincterotomy before self-expandable metal stent insertion for malignant biliary obstruction

Table 5 Rates of complications on biliary stenting with limited endoscopic sphincterotomy according to stent type

	Uncoveredn = 190	Coveredn = 54	P value
Normal	181 (95.3)	49 (90.7)
Abnormal	9 (4.7)	5 (9.3)
Post-ERCP complication			1.000
Present	7 (3.7)	2 (3.7)
Absent'	183 (96.3)	52 (96.3)
Post-ERCP complication type			0.838
Pancreatitis	5 (2.6)	2 (3.7)
Mild / moderate	4 (2.1) / 1 (0.5)	2 (3.7) / 0 (0)
Bleeding, mild	2 (1.1)	0 (0)
Perforation	0 (0)	0 (0)
Post-ERCP hyperamylasemia	25 (13.2)	5 (9.3)	0.638
Stent complication			0.758
None	156 (82.1)	43 (79.6)
Stent occlusion	33 (17.4)	11 (20.4)
Stent migration	1 (0.5)	0 (0)
Patency			0.012
No further procedure	156 (82.1)	43 (79.6)
ERBD restent	1 (0.5)	0 (0)
SEMS restent	28 (14.7)	4 (7.4)
PTBD	5 (2.6)	7 (13)

SEMS: Self-expandable metal stent; ERBD: Endoscopic retrograde biliary drainage; PTBD: Percutaneous transhepatic biliary drainage; ERCP: Endoscopic retrograde cholangio pancreatography.