Value of temporary stents for the management of perivaterian perforation during endoscopic retrograde cholangiopancreatography

Table 1 Classification of endoscopic retrograde cholangiopancreatography-related perforations

Ref.	Type
Stapfer et al[18]	Type I, duodenal perforation of medial or lateral wall
	Type II, perivaterian perforation
	Type III, perforation of distal bile duct
	Type IV, retroperitoneal air alone
Howard et al[17]	Group I, guidewire perforation
	Group II, periampullary retroperitoneal perforation
	Group III, duodenal perforation remote from the ampulla