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Gong B.,Shanghai JiaoTong University | Sun B.,Shanghai Gleneagles Medical Center | Hao L.-X.,No. 455 Hospital | Bie L.,Shanghai JiaoTong University
Hepatobiliary and Pancreatic Diseases International | Year: 2011

BACKGROUND: Proximal migration of pancreatic stent (PMPS) is an infrequent event but its management can be technically challenging and there are no standard retrieval methods. This study aimed to determine the results of an endoscopic stent retrieval algorithm in terms of feasibility and efficacy of the endoscopic procedure. METHODS: During the period from January 2008 to December 2009, 15 patients (8 women and 7 men with a mean age of 51.9 years) with PMPS were included in this study. Stent retrieval was approached initially with balloon extraction followed by rat-tooth forceps and basket. A rescue approach such as using a stent retriever was attempted when other approaches failed. RESULTS: All the PMPSs (six 5Fr, nine 7Fr) were retrieved successfully within one ERCP session. Balloon extraction was successful in 9 (60%) patients. In the 6 failed cases of balloon extraction, wire-guided rat-tooth forceps grasp was successful in 4, and stone extraction basket grasp was successful in 1 in whom forceps grasp failed. One stent was finally rescued with a stent retriever when balloon extraction, forceps and basket grasp all failed. In patients with successful balloon extraction, 44.4% (4/9) developed post-ERCP hyperamylasemia but none of them developed post-procedure pancreatitis. CONCLUSIONS: With this algorithm, 5Fr and 7Fr PMPS were successfully retrieved in all of the patients. Most PMPSs can be safely retrieved with the commonly-used approaches in this study. Those less used approaches can be used as a rescue method. © 2011, Hepatobiliary Pancreat Dis Int. Source


Gong B.,Shanghai JiaoTong University | Hao L.,Chinese Peoples Liberation Army | Bie L.,Shanghai JiaoTong University | Sun B.,Shanghai Gleneagles Medical Center
Surgical Endoscopy and Other Interventional Techniques | Year: 2010

Background: There is no clear answer regarding use of precut technique versus conventional method in achieving successful biliary cannulation. Objective: To compare the effectiveness of precut technique with that of conventional biliary cannulation by meta-analysis of available randomized controlled trials (RCTs). Methods: Databases including MEDLINE, EMBASE, Cochrane Library, and Science Citation Index updated to July 2009 were searched. Main outcome measures were success rates of biliary cannulation, incidence of post-endoscopic retrograde cholangiopancreatography (ERCP) complications, and post-ERCP pancreatitis rate. Meta-analysis of these clinical trials was performed. Results: Six RCTs were included. The primary biliary cannulation rate reported with precut and conventional techniques was 89.3 and 78.1%, respectively. Pooled analysis of all selected studies comparing precut cannulation technique with conventional techniques yielded an odds ratio (OR) of 2.05 [95% confidence interval (CI): 0.64-6.63]. Pooled analysis comparing post-ERCP pancreatitis rates for the precut-cannulation groups with those for the conventional-method groups yielded an rate ratio (RR) of 0.46 (95% CI: 0.23-0.92). Conclusion: This meta-analysis shows that the precut technique does not increase the primary cannulation rate. However, the technique reduces the risk of post-ERCP pancreatitis compared with conventional technique. Further large, well-performed, randomized controlled studies are needed to confirm these findings. © 2010 Springer Science+Business Media, LLC. Source

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