title: A wait-and-see strategy with subsequent self-expanding metal stent on demand is superior to prophylactic bypass surgery for unresectable periampullary cancer.
abstract: BACKGROUND
  A patient with unresectable periampullary malignancy found at laparotomy has traditionally received a prophylactic double bypass (biliary and duodenal), associated with considerable morbidity. With modern endoscopic treatments, surgical bypass has become questionable. This study aims to compare the two strategies. Sahlgrenska University Hospital (SU) performs a double bypass (DoB) routinely, and Skåne University Hospital Lund (SUL) secures biliary drainage endoscopically and treats only symptomatic duodenal obstruction (Wait and See, WaS).
  
  
  METHODS
  Between 2004 and 2013, 73 patients from SU and 70 from SUL were retrospectively identified. Demographics, tumour-related factors and postoperative outcomes during the remaining lifetime were noted.
  
  
  RESULTS
  The DoB group had significantly more complications (67% vs. 31%, p = 0.00002) and longer hospital stay (14 vs. 8 days, p = 0.001) than the WaS-group. The two groups had similar proportion of patients in need of readmission. The DoB patients and the WaS patients with metallic biliary stents were comparable regarding their need of re-interventions and hospitalisation due to biliary obstruction. Surgical duodenal bypass did not prevent future duodenal obstructions.
  
  
  CONCLUSIONS
  Patients with unresectable periampullary malignancies can safely be managed with endoscopic drainage on demand and with lower morbidity and shorter hospital stay than with surgical prophylactic bypass.
authors.affiliation: Department of Surgery, Skåne University Hospital at Lund and Lund University, Sweden.
authors.forename: Caroline
authors.initials: C
authors.lastname: Williamsson
authors.affiliation: Department of Surgery, Sahlgrenska University Hospital, Gothenburg and Gothenburg University, Sweden.
authors.forename: Johanna
authors.initials: J
authors.lastname: Wennerblom
authors.affiliation: Department of Surgery, Skåne University Hospital at Lund and Lund University, Sweden.
authors.forename: Bobby
authors.initials: B
authors.lastname: Tingstedt
authors.affiliation: Department of Surgery, Sahlgrenska University Hospital, Gothenburg and Gothenburg University, Sweden. Electronic address: claes.jonsson@vgregion.se.
authors.forename: Claes
authors.initials: C
authors.lastname: Jönsson
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014670:Ampulla of Vater / Q000473:pathology / Q000601:surgery*; D003138:Common Bile Duct Neoplasms / Q000150:complications / Q000473:pathology / Q000601:surgery / Q000628:therapy*; D004322:Drainage / Q000009:adverse effects / Q000295:instrumentation*; D004379:Duodenal Neoplasms / Q000150:complications / Q000473:pathology / Q000601:surgery / Q000628:therapy*; D004380:Duodenal Obstruction / Q000209:etiology / Q000601:surgery; D004724:Endoscopy / Q000009:adverse effects / Q000295:instrumentation*; D005260:Female; D015390:Gastric Bypass / Q000009:adverse effects / Q000379:methods*; D006785:Hospitals, University; D006801:Humans; D007582:Jejunostomy / Q000009:adverse effects / Q000379:methods*; D007902:Length of Stay; D008297:Male; D008670:Metals; D008875:Middle Aged; D010166:Palliative Care; D010359:Patient Readmission; D011474:Prosthesis Design; D012086:Reoperation; D012189:Retrospective Studies; D015607:Stents; D013548:Sweden; D013997:Time Factors; D016896:Treatment Outcome; D057832:Watchful Waiting
chemical_list: D008670:Metals