From: Impact of duodenal papilla anatomy on needle knife papillotomy safety and efficacy in patients with difficult biliary canulation
Type of Papillary, n (%)
Type 1 (n = 115)
Type 2 (n = 29)
Type 3 (n = 52)
Type 4 (n = 21)
P value
Adverse events, n (%)
8
3
4
0.69
PEP
6
2
0.71
Bleeding
1
0
0.79
Perforation
-
Cholangitis
0.48