Table 1.

Treatment modality according to stricture location and etiology.

Type	Site	Common Etiology	Endoscopic Treatment
1	Distal CBD	Chronic pancreatitis Papillary stenosis	Multiple plastic stent SEMS
2	Mid extra hepatic duct (>1 cm from hilum)	Post surgery (CCY, AS, OLT) PSC	MPS Intraductal SEMS
3	Hilar and intra-hepatic	PSC, autoimmune, ischemic	Balloon dilatation, plastic stenting (single or multiple)
4	Surgical bilio-enteric anastomotic	Post surgical	Balloon dilatation

AS anastomotic stricture, CBD common bile duct, CCY cholecystectomy, MPS multiple plastic stents, OLT liver transplantation, PSC primary sclerosing cholangitis, SEMS self-expandable metal stent [4].