title: Limited surgery for benign tumours of the pancreas: a systematic review.
abstract: BACKGROUND
  Limited surgical procedures for benign cystic neoplasms and endocrine tumours of the pancreas have the potential advantage of pancreatic tissue sparing compared to standard oncological resections.
  
  
  METHODS
  Searching PubMed/MedLine, Embase and Cochrane Library identified 86 full papers: 25 reporting on enucleation (EN), 38 on central pancreatectomy (CP) and 23 on duodenum-preserving total/partial pancreatic head resection (DPPHRt/p). The results are based on analysis of data of 838, 912 and 431 patients for EN, CP and DPPHRt/s, respectively.
  
  
  RESULTS
  The indication for EN for cystic neoplasms and neuro-endocrine tumours to EN was 20.5 and 73 %; for CP 62.9 and 31 %; and for DPPHRt/p 69.6 and 10.2%, respectively. The estimated mean tumour sizes were in EN-group 2.4 cm, in CP-group 2.9 cm and in DPPHRt/p-group 3.1 cm (DPPHRt/p vs EN, p = 0.035). Postoperative severe complications developed after EN, CP and DPPHRt/p in 9.6, 16.8 and 11.5% of patients; pancreatic fistula in 36.7, 35.2 and 20.1%; and reoperation was required in 4.7, 6.5 and 1.8 %, respectively. Hospital mortality after EN was 0.95 %; after CP 0.72%; and after DPPHRt/p 0.49%. Compared to EN and CP, DPPHRt/p exhibited significant lower frequency of reoperation (p = 0.029, p < 0.001) and lower rate of fistula (p < 0.001; p = 0.001).
  
  
  CONCLUSIONS
  EN, CP and DPPHRt/p applied for benign tumours are associated with low surgery-related early postoperative morbidity, a very low hospital mortality and the advantages of conservation of pancreatic functions. However, the level of evidence for EN and CP compared to standard oncological resections appears presently low. There is a high level of evidence from prospective controlled trials regarding the significant maintenance of exocrine and endocrine pancreatic functions after DPPHRt/p compared to pancreato-duodenectomy.
authors.affiliation: Department of General-and Visceral Surgery, c/o University of Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany, hans@beger-ulm.de.
authors.forename: H G
authors.initials: HG
authors.lastname: Beger
authors.forename: M
authors.initials: M
authors.lastname: Siech
authors.forename: B
authors.initials: B
authors.lastname: Poch
authors.forename: B
authors.initials: B
authors.lastname: Mayer
authors.forename: M H
authors.initials: MH
authors.lastname: Schoenberg
mesh_terms: D017052:Hospital Mortality; D006801:Humans; D018297:Neoplasms, Cystic, Mucinous, and Serous / Q000473:pathology / Q000601:surgery*; D018358:Neuroendocrine Tumors / Q000473:pathology / Q000601:surgery*; D059351:Organ Sparing Treatments / Q000379:methods; D010180:Pancreatectomy / Q000009:adverse effects / Q000379:methods*; D010185:Pancreatic Fistula / Q000209:etiology*; D010190:Pancreatic Neoplasms / Q000473:pathology / Q000601:surgery*; D012086:Reoperation