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Recently, Bang et al1 conducted the first randomised trial on lumen-apposing metal stents (LAMS) versus plastic stents for endoscopic ultrasonography (EUS)-guided drainage of walled-off necrosis (WON), which provided significant information for the clinical application of LAMS. We agree with Bang et al1 that the wider diameter of LAMS facilitates more rapid drainage of necrotic contents leading to faster WON resolution, and we agree that LAMS must be removed at 3 weeks postprocedure if the WON resolved. Our endoscopy centre observed LAMS-related adverse events, including stent buried in tissue2 and cardia occlusion,3 at more than 3 weeks postprocedure.
Bang et al1 stated that disconnected pancreatic duct …
HZ, HL and XK contributed equally.
Contributors HZ, ZL and YD conceived and designed the study. ZJ performed the endoscopy procedures. HZ, HL and XK wrote the draft. All authors final approval of the letter. HZ, HL and XK contributed equally.
Funding This investigation is supported by the grant from National Clinical Research Center for Digestive Diseases of China (2015BAI13B08) and Dr Huiyun Zhu is supported by China Scholarship Council.
Competing interests None declared.
Patient consent Not required.
Ethics approval Shanghai Changhai Hospital Ethics Committee.
Provenance and peer review Not commissioned; internally peer reviewed.