title: Clinical utility of single-operator cholangiopancreatoscopy using a SpyGlass probe through an endoscopic retrograde cholangiopancreatography catheter.
abstract: OBJECTIVE
  A single-operator cholangiopancreatoscopy was developed to overcome a problem in conventional peroral cholangiopancreatoscopy. The aim of this pilot study was to clarify the clinical utility of single-operator cholangiopancreatoscopy using a SpyGlass probe through an endoscopic retrograde cholangiopancreatography (ERCP) catheter.
  
  
  METHODS
  Patients undergoing ERCP with a SpyGlass probe passed through a catheter were included in this study. The SpyGlass probe was inserted into the catheter following successful cannulation, and cholangiopancreatoscopy was performed by a single operator. We retrospectively analyzed the successful visualization rate of this technique.
  
  
  RESULTS
  Fifteen patients were included in this study. SpyGlass cholangiopancreatoscopy was technically successful in all patients. Successful visualization was obtained in nine patients (60%). The median SpyGlass procedure time was 10 min. Cholangiopancreatoscopic diagnoses were as follows: bile duct carcinoma in three patients; intraductal papillary mucinous adenoma in two; and intraductal pancreatic stone, benign biliary stricture, gallbladder cholesterolosis, and gallbladder carcinoma in one each. There were no cases of post-ERCP pancreatitis.
  
  
  CONCLUSIONS
  While the low rate of successful visualization must be improved, single-operator cholangiopancreatoscopy using a SpyGlass probe through an ERCP catheter is a safe and effective procedure.
authors.affiliation: Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. kkawakubo-gi@umin.ac.jp
authors.forename: Kazumichi
authors.initials: K
authors.lastname: Kawakubo
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Isayama
authors.forename: Naoki
authors.initials: N
authors.lastname: Sasahira
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Kogure
authors.forename: Naminatsu
authors.initials: N
authors.lastname: Takahara
authors.forename: Koji
authors.initials: K
authors.lastname: Miyabayashi
authors.forename: Suguru
authors.initials: S
authors.lastname: Mizuno
authors.forename: Keisuke
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Dai
authors.initials: D
authors.lastname: Mohri
authors.forename: Takashi
authors.initials: T
authors.lastname: Sasaki
authors.forename: Natsuyo
authors.initials: N
authors.lastname: Yamamoto
authors.forename: Yousuke
authors.initials: Y
authors.lastname: Nakai
authors.forename: Kenji
authors.initials: K
authors.lastname: Hirano
authors.forename: Minoru
authors.initials: M
authors.lastname: Tada
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Koike
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001660:Biliary Tract Diseases / Q000175:diagnosis* / Q000473:pathology; D057785:Catheters; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000295:instrumentation*; D016145:Endoscopy, Digestive System / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D010182:Pancreatic Diseases / Q000175:diagnosis* / Q000473:pathology; D010865:Pilot Projects; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D013997:Time Factors