Long-term outcomes of post-transplant biliary anastomotic strictures: Endoscopic therapy with plastic and metal stents

Table 1 Demographic and baseline characteristics

	Covered self-expandable metal stents (n = 84)	Multiple plastic stents (n = 20)	P value
Male:female	64:20	15:5	> 0.999
Age (years)
Median	61	64	0.882
Range	20-77	26-79
Etiology
HCV	26	6
HBV	6	2
HCV + HBV	2	0
Alcohol	25	4
Metabolic dysfunction-associated steatohepatitis	8	2
Autoimmune hepatitis	4	3
Cryptogenic	9	0
Wilson disease	0	0
Acute liver failure	2	2
Primary biliary cirrhosis	0	0
Primary sclerosing cholangitis	2	0
Budd-Chiari	1	0
Alpha-1 antitrypsin deficiency	2	0
Familial amyloidotic polyneuropathy	2	2
Hemochromatosis	0	1
Hyperoxaluria	0	0
Presence of hepatocellular carcinoma	32	6	0.499
Time from orthotopic liver transplantation to endoscopic retrograde cholangiopancreatography (days)
Median	153	77	0.111
Range	11-3.995	7-4.680

HCV: Hepatitis C virus.

Table 2 Treatment characteristics

	Covered self-expandable metal stents	Multiple plastic stents	P value
Stent treatment duration (days)
Median	381	390	0.531
Total number of ERCP
Median	2	5	0.001
Number of stents per ERCP/patient
Median	1	4	0.001
Range	1-3	1-6
Total number of stents per patients
Median	1	12	0.001
Range	1-3	1-27
Adverse events
Sphincterotomy bleeding	3	1
Dilatation bleeding	1	0
Choledocholithiasis/occlusion of stent	25	7
Acute pancreatitis	7	0
Cholangitis	4	0
Perforation	1	1
Stricture after sphincterotomy	0	1
Hemobilia	0	0
Abdominal pain	0	0
Stricture caused by the stent	3	0
Technical difficulty in removing the stent	0	0
Bleeding removing the stent	1	0
Death	12	4	0.504
Death related to ERCP procedure	0	0

ERCP: Endoscopic retrograde cholangiopancreatography.