title: Changing trends in operations for chronic pancreatitis: a 22-year experience.
abstract: OBJECTIVE
  To report the evolution of methods of surgical treatment of chronic pancreatitis.
  
  
  METHODS
  Retrospective analysis.
  
  
  METHODS
  Private clinic, USA.
  
  
  METHODS
  448 consecutive patients who were operated on for chronic pancreatitis.
  
  
  METHODS
  Resection (n = 286) or drainage of the duct (n = 162).
  
  
  METHODS
  Changes over the 22-year period.
  
  
  RESULTS
  There was a change towards resection after 1985 (195/238, 59%, from 1976-90 compared with 91/120, 76%, from 1991-97), partly because of suspicions of malignancy. In recent years (1991-97) pylorus-preserving pancreaticoduodenectomy has come to be preferred over classic resection including antrectomy (22/36, 61%, compared with 11/69, 16%). Eight duodenum-preserving resections have been done since 1994.
  
  
  CONCLUSIONS
  More resections, particularly proximal pancreatectomies, are done nowadays. Lateral pancreaticojejunostomy has become the preferred drainage procedure, and pylorus-preserving pancreaticoduodenectomy is favoured over classic pancreaticoduodenectomy.
authors.affiliation: Department of Surgery, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA.
authors.forename: G H
authors.initials: GH
authors.lastname: Sakorafas
authors.forename: M G
authors.initials: MG
authors.lastname: Sarr
mesh_terms: D002908:Chronic Disease; D013505:Digestive System Surgical Procedures / Q000379:methods / Q000706:statistics & numerical data / Q000639:trends*; D004322:Drainage / Q000639:trends; D005544:Forecasting; D006801:Humans; D010180:Pancreatectomy / Q000639:trends; D010183:Pancreatic Ducts / Q000601:surgery; D016577:Pancreaticoduodenectomy / Q000639:trends; D010193:Pancreaticojejunostomy / Q000639:trends; D010195:Pancreatitis / Q000401:mortality / Q000503:physiopathology / Q000601:surgery*; D012189:Retrospective Studies; D016019:Survival Analysis