Endoscopic ultrasonography-guided drainage for patients with symptomatic obstruction and enlargement of the pancreatic duct

Table 2 Comparisons of endoscopic ultrasonography-guided drainage of the pancreatic duct performed before and after introduction of Will’s HF ring knife into clinical endoscopic practice n (%)

Intervention period	Clinical success	Re-interventions	Adverse events
Before introduction of ring knife (n = 35)	25 (71.4)	11 (31.4)	14 (40.0)
After introduction of ring knife (n = 48)	43 (89.6)	6 (12.5)	11 (22.9)