title: Factor analysis of recurrent biliary events in long-term follow up of gallstone pancreatitis.
abstract: OBJECTIVE
  Recurrent attacks after acute gallstone pancreatitis (GSP) are substantial problems, together with associated morbidity and mortality. The recommended therapies for recurrent attacks are cholecystectomy and endoscopic sphincterotomy (EST). This study aimed to evaluate the long-term results of cholecystectomy and EST after clinical improvement of GSP.
  
  
  METHODS
  A consecutive series of patients who were admitted with GSP from January 2003 to December 2014 were analyzed. Patients were categorized into three treatment subgroups: cholecystectomy (n = 53), EST (n = 51) and conservative care (n = 67).
  
  
  RESULTS
  A total of 171 patients were enrolled. The mean follow-up period was 58 months (range 6-125 months). The pancreatitis-induced in-hospital mortality rate was 1.5%. The cholecystectomy and EST groups had a significantly lower frequency of recurrent pancreatitis than the conservative care group (P < 0.01). For recurrent pancreatitis, there was no significant difference between the cholecystectomy with and without EST subgroups. With respect to total recurrent biliary events, the cholecystectomy group was superior to the EST only group (P < 0.01). In patients receiving definitive treatment (cholecystectomy with or without EST), the presence of common bile duct (CBD) stone was an independent risk factor for recurrent biliary events (P < 0.01).
  
  
  CONCLUSIONS
  In the long-term follow up of GSP, cholecystectomy can offer better protection against recurrent biliary events than EST only. The presence of CBD stones at time of definitive therapy might be a risk factor for recurrent biliary events.
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, St Vincent Hospital, Catholic University of Korea, Suwon, South Korea.
authors.forename: Ji Min
authors.initials: JM
authors.lastname: Lee
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, St Vincent Hospital, Catholic University of Korea, Suwon, South Korea.
authors.forename: Woo Chul
authors.initials: WC
authors.lastname: Chung
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, St Vincent Hospital, Catholic University of Korea, Suwon, South Korea.
authors.forename: Hea Jung
authors.initials: HJ
authors.lastname: Sung
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, St Vincent Hospital, Catholic University of Korea, Suwon, South Korea.
authors.forename: Yeon-Ji
authors.initials: YJ
authors.lastname: Kim
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, St Vincent Hospital, Catholic University of Korea, Suwon, South Korea.
authors.forename: Gun Jung
authors.initials: GJ
authors.lastname: Youn
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, St Vincent Hospital, Catholic University of Korea, Suwon, South Korea.
authors.forename: Yun Duk
authors.initials: YD
authors.lastname: Jung
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, St Vincent Hospital, Catholic University of Korea, Suwon, South Korea.
authors.forename: Sooa
authors.initials: S
authors.lastname: Choi
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, St Paul's Hospital, Catholic University of Korea, Seoul, South Korea.
authors.forename: Eun Jung
authors.initials: EJ
authors.lastname: Jeon
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000379:methods; D002763:Cholecystectomy / Q000379:methods; D005163:Factor Analysis, Statistical; D005260:Female; D005500:Follow-Up Studies; D042882:Gallstones / Q000150:complications* / Q000601:surgery; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D010195:Pancreatitis / Q000209:etiology* / Q000601:surgery*; D012008:Recurrence; D012189:Retrospective Studies; D012307:Risk Factors; D016717:Sphincterotomy, Endoscopic / Q000379:methods
keywords: cholecystectomy; endoscopic sphincterotomy; gallstone pancreatitis