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2 "Tetsuro Ujihara"
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The efficacy of a novel integrated outside biliary stent and nasobiliary drainage catheter system for acute cholangitis: a single center pilot study
Naosuke Kuraoka, Tetsuro Ujihara, Hiromi Kasahara, Yuto Suzuki, Shun Sakai, Satoru Hashimoto
Clin Endosc 2023;56(6):795-801.   Published online April 11, 2023
Graphical AbstractGraphical Abstract AbstractAbstract PDFSupplementary MaterialPubReaderePub
/Aims: Endoscopic biliary drainage is the gold standard treatment for cholangitis. The two methods of biliary drainage are endoscopic biliary stenting and nasobiliary drainage. A novel integrated outside biliary stent and nasobiliary drainage catheter system (UMIDAS NB stent; Olympus Medical Systems) was recently developed. In this study, we evaluated the efficacy of this stent in the treatment of cholangitis caused by common bile duct stones or distal bile duct strictures.
We conducted a retrospective pilot study by examining the medical records of patients who required endoscopic biliary drainage for cholangitis due to common bile duct stones or distal bile duct strictures, and who were treated with a UMIDAS NB stent, between December 2021 and July 2022.
Records of 54 consecutive patients were reviewed. Technical and clinical success rates were 47/54 (87.0%) and 52/54 (96.3%), respectively. Adverse events were observed in 12 patients, with six patients experiencing pancreatitis as an adverse event, following endoscopic retrograde cholangiopancreatography (ERCP). Regarding late adverse events, five cases of biliary stent migration into the bile duct were observed. Disease-related death occurred in one patient.
The outside-type UMIDAS NB stent is an efficacious new method for biliary drainage and can be applied to many indications.
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A New Technique of Endoscopic Transpapillary Gallbladder Drainage Combined with Intraductal Ultrasonography for the Treatment of Acute Cholecystitis
Ryota Sagami, Kenji Hayasaka, Tetsuro Ujihara, Ryotaro Nakahara, Daisuke Murakami, Tomoyuki Iwaki, Satoshi Suehiro, Yasushi Katsuyama, Hideaki Harada, Yuji Amano
Clin Endosc 2020;53(2):221-229.   Published online November 5, 2019
AbstractAbstract PDFPubReaderePub
/Aims: Endoscopic transpapillary gallbladder drainage (ETGBD) is useful for the treatment of acute cholecystitis; however, the technique is difficult to perform. When intraductal ultrasonography (IDUS) is combined with ETGBD, the orifice of the cystic duct in the common bile duct may be more easily detected in the cannulation procedure. The aim of this study was to evaluate the efficacy of ETGBD with IDUS compared with that of ETGBD alone.
A total of 100 consecutive patients with acute cholecystitis requiring ETGBD were retrospectively recruited. The first 50 consecutive patients were treated using ETGBD without IDUS, and the next 50 patients were treated using ETGBD with IDUS. Through propensity score matching analysis, we compared the clinical outcomes between the groups. The primary outcome was the technical success rate.
The technical success rate of ETGBD with IDUS was significantly higher than that of ETGBD without IDUS (92.0% vs. 76.0%, p=0.044). There was no significant difference in procedure length between the two groups (74.0 min vs. 66.7 min, p=0.310). The complication rate of ETGBD with IDUS was significantly higher than that of ETGBD without IDUS (6.0% vs. 0%, p<0.001); however, only one case showed an IDUS technique-related complication (pancreatitis).
The assistance of IDUS may be useful in ETGBD.


Citations to this article as recorded by  
  • The Endoscopic Retrograde Cholangiopancreatography and Endoscopic Ultrasound Connection: Unity Is Strength, or the Endoscopic Ultrasonography Retrograde Cholangiopancreatography Concept
    Claudio Giovanni De Angelis, Eleonora Dall’Amico, Maria Teresa Staiano, Marcantonio Gesualdo, Mauro Bruno, Silvia Gaia, Marco Sacco, Federica Fimiano, Anna Mauriello, Simone Dibitetto, Chiara Canalis, Rosa Claudia Stasio, Alessandro Caneglias, Federica Me
    Diagnostics.2023; 13(20): 3265.     CrossRef
  • Strategy Comparison of Endoscopic Ultrasound-Guided Gallbladder Drainage to Percutaneous Transhepatic Gallbladder Drainage, Following Failed Emergent Endoscopic Transpapillary Gallbladder Drainage
    Ryota Sagami, Kazuhiro Mizukami, Takao Sato, Hidefumi Nishikiori, Kazunari Murakami
    Journal of Clinical Medicine.2023; 12(22): 7034.     CrossRef
  • Accuracy of Endoscopic Transpapillary Gallbladder Drainage with Liquid-Based Cytology for Gallbladder Disease
    Soichiro Kawahara, Takeshi Tomoda, Hironari Kato, Toru Ueki, Yutaka Akimoto, Ryo Harada, Tomohiro Toji, Hiroyuki Okada
    Digestion.2022; 103(2): 116.     CrossRef
  • The anatomy of the cystic duct and its association with cholelithiasis: MR cholangiopancreatographic study
    Shallu Garg, Usha Dutta, Sreedhara B. Chaluvashetty, Kimavat Hemanth Kumar, Naveen Kalra, Daisy Sahni, Anjali Aggarwal
    Clinical Anatomy.2022; 35(7): 847.     CrossRef
  • Bouncing off the balloon: A new trick for selective cystic duct cannulation
    Rishabh Gulati, Tarun Rustagi
    Journal of Hepato-Biliary-Pancreatic Sciences.2021;[Epub]     CrossRef
  • Endoscopic Transpapillary Gallbladder Drainage for Acute Cholecystitis
    Zain A. Sobani, Christina Ling, Tarun Rustagi
    Digestive Diseases and Sciences.2021; 66(5): 1425.     CrossRef
  • Akute Cholezystitis bei hohem OP-Risiko: sonografische und endoskopische Therapieoptionen
    Manuela Götzberger, Natascha Nüssler, Barbara Braden, Christoph F. Dietrich, Thomas Müller
    Zeitschrift für Gastroenterologie.2021; 59(09): 983.     CrossRef
  • Editors' Choice of Noteworthy Clinical Endoscopy Publications in the First Decade
    Gwang Ha Kim, Kwang An Kwon, Do Hyun Park, Jimin Han
    Clinical Endoscopy.2021; 54(5): 633.     CrossRef
  • A case in which repositioning based on intraductal ultrasonography was useful for trans-papillary gallbladder drainage
    Teruaki Miyauchi, Kenji Shimura
    Progress of Digestive Endoscopy.2021; 99(1): 135.     CrossRef
  • Intraductal Ultrasonography Can Enhance the Success of Endoscopic Transpapillary Gallbladder Drainage in Patients with Acute Cholecystitis
    Clement Chun Ho Wu, Christopher Jen Lock Khor
    Clinical Endoscopy.2020; 53(2): 114.     CrossRef
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