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Table 1 Inclusion and exclusion criteria

From: Lumen-apposing metal stents (LAMS) versus plastic stents for EUS-guided drainage of walled-off necrosis (WON) (LVPWON): study protocol for a multicenter randomized controlled trial

Inclusion criteria

 Aged 18–80 years

 Individual with WON confirmed by CT and MRCP

 The size of WON ≥ 6 cm and located adjacent to the gastric wall

 Participants has symptoms related to the WON

 Written informed consent obtained

Exclusion criteria

 Aged < 18 years or > 80 years

 Individual cannot accept the endoscopic procedure

 The distance between the stomach and the wall of the WON ≥ 1 cm

 Participant has blood coagulation dysfunction (platelet count < 50 × 109/L or INR > 1.5)

 Allergic to nickel titanium

 Suffering from severe lung or heart disease

 Pregnant and lactating women and those who are about to become pregnant soon

 Any other factors that are not suitable for inclusion or influence the individual’s participation in the study judged by researchers

  1. WON walled-off necrosis, INR international normalized ratio