Comparison of treatment outcomes between biliary plastic stent placements with and without endoscopic sphincterotomy for inoperable malignant common bile duct obstruction

Table 1 Patients characteristics

	Group A With ES	Group B w/o ES	Total
Patients	96	96	192
Median Age (± SD)	72 ± 6	75 ± 6	73 ± 7
Gender (M/F)	51/35	47/39	98/74
Bilirubine (mg/dL)	13.5	11.9	12.7
Stent lenght(cm)	6.78	6.76	6.79
Visualization of pancreatic duct	77	79	156
Pancreatic cancer	64 (66.6 %)	67 (69.8 %)	131 (68.2%)
Cholangiocarcinoma	31 (32.3 %)	28 (29.1 %)	59 (30.7 %)
Metastatic lymph nodes	1 (1.1%)	1 (1.1%)	2 (1.1 %)

Table 2 Endoscopic tecnique results

	Group A With ES (%)	Group B w/o ES (%)	P
Successful stent insertion	92/96 (95.8)	90/96 (93.7)	0.745
Early complications	6/92 (6.5)	4/90 (4.4)	0.772
Pancreatitis	2/92 (2.2)	2/90 (2.2)	0.629
Bleeding	3/92 (3.7)	0/90	0.252
Clogging	1/92 (1.2)	2/90	0.985
Procedure related mortality	0	0
Late complications	16/92 (17.4)	15/90 (16.6)	0.946
Migration	3/92 (3.2)	3/90 (3.3)	0.698

Table 3 Stents replacement

	Group A with ES	Group B w/o ES	P
Patients (n)	41	46
Successful stent replacement	39/41	45/46	0.919
Patency (median ± SD)	109 ± 15	110 ± 18	0.765