Early versus delayed EUS-guided drainage for postoperative pancreatic fluid collections: a systematic review and meta-analysis.

"Declarations DisclosuresYousuke Nakai received research grants from Boston Scientific Japan and HOYA Corporation and honoraria from Boston Scientific Japan, Fujifilm Corporation, and Olympus Corporation. Hiroyuki Isayama received research grants from Boston Scientific Japan, Fujifilm Corporation, Fujifilm Health Care Corporation, Gadelius Medical KK, and Zeon Medical Inc. and honoraria from Boston Scientific Japan, Fujifilm Corporation, Taewoong Medical Devices, Olympus Corporation, Century Medical, Inc., and Cook Medical Japan G.K. Yasuda Ichiro received honoraria from Gadelius Medical KK and Medicos Hirata. Other authors had no conflict of interest to disclose. Tsuyoshi Mukai Tsuyoshi Hamada, Saburo Matsubara, Takashi Sasaki, Hirotoshi Ishiwatari, Susumu Hijioka, Hideyuki Shiomi, Mamoru Takenaka, Takuji Iwashita, Atsuhiro Masuda, and Tomotaka Saito had nothing to disclose. Disclosures Yousuke Nakai received research grants from Boston Scientific Japan and HOYA Corporation and honoraria from Boston Scientific Japan, Fujifilm Corporation, and Olympus Corporation. Hiroyuki Isayama received research grants from Boston Scientific Japan, Fujifilm Corporation, Fujifilm Health Care Corporation, Gadelius Medical KK, and Zeon Medical Inc. and honoraria from Boston Scientific Japan, Fujifilm Corporation, Taewoong Medical Devices, Olympus Corporation, Century Medical, Inc., and Cook Medical Japan G.K. Yasuda Ichiro received honoraria from Gadelius Medical KK and Medicos Hirata. Other authors had no conflict of interest to disclose. Tsuyoshi Mukai Tsuyoshi Hamada, Saburo Matsubara, Takashi Sasaki, Hirotoshi Ishiwatari, Susumu Hijioka, Hideyuki Shiomi, Mamoru Takenaka, Takuji Iwashita, Atsuhiro Masuda, and Tomotaka Saito had nothing to disclose."

"Funding Open access funding provided by The University of Tokyo. This work was supported in part by grants from the Japanese Foundation for Research and Promotion of Endoscopy (Tomotaka Saito and Yousuke Nakai). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript."

"This systematic review and meta-analysis aimed to evaluate treatment outcomes of early vs. delayed EUS-guided drainage of POPFCs and was conducted in accordance with the PRISMA (the Preferred Reporting Items for Systematic reviews and Meta-Analyses) guideline []. The protocol was registered in the database of UMIN (University Hospital Medical Information Network; registration number, UMIN000049891). This study was conducted by the WONDERFUL (WON anD pERipancreatic FlUid coLlection) study group, which consisted of expert endoscopists, gastroenterologists, interventional radiologists, and epidemiologists at high-volume centers in Japan (UMIN-CTR Registration Number UMIN000044130) [, ]."