Outcomes of Therapeutic Endoscopic Retrograde Cholangiopancreatography
Keywords:
Cholelithiasis, common bile duct stone, endoscopic balloon dilation, doscopic retrograde cholangiopancreatography, endoscopic sphincterotomyAbstract
Objective: To study the outcomes of therapeutic endoscopic retrograde cholangiopancreatography (ERCP)performed by one endoscopist focusing on results and complications of first biliary cannulation.
Methods: Two hundred and fifty nine consecutive therapeutic ERCP procedures were included in the study.
Patients were classified into three groups according to sphincterotomy techniques: (1) standard endoscopic
sphincterotomy (EST); (2) precut EST; (3) endoscopic balloon dilation (EPBD)/endoscopic large balloon dilation
(EPLBD). Characteristics of patients, indications for ERCP, number of instruments used, results and complications
were analyzed.
Results: ERCP for malignant biliary strictures and unintentional pancreatic duct injection were significantly
more frequent in the precut EST group compared with the standard EST group. The majority of patients in the EPBD/
EPLBD group had cholelithiasis, and required more instrumentation. Of the 259 cases, first biliary cannulation was
achieved by using standard sphincterotomy in 204 cases (79%). Immediate precut EST after failed standard cannulation
was successful in 46 of 50 cases (92%). The cumulative cannulation success rate was 97% (250 of 259). The precut EST
group had the highest complication rate (14%), which was not significantly higher than that in the standard EST group
(5%). The EPBD/EPLBD group had the lowest complication rate of 2%.
Conclusion: Malignant biliary obstruction may cause difficulty in biliary cannulation and may require the use of
the precut technique to achieve successful cannulation. Precut EST using both septotomy and needle knife techniques
could increase the rate of successful biliary cannulation in difficult cases without significantly increasing the risk of
complications. Early precut should be considered when facing with difficult cases to avoid over manipulation of the
papilla. EPBD/EPLBD was safe and effective for biliary cannulation and treatment of large CBD stones.
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