title: [One layer end to side choledochusduodenal anastomosis with evertion of the choledochus wall in swines].
abstract: OBJECTIVE
  This article aims to study the one layer end to side choledochusduodenal anastomosis creating a "neopapila" which, because of the mucosa recovering it, would prevent stenosis.
  
  
  METHODS
  Thirty male pigs were distributed within 3 equal groups = Group I (control)--conventional choledochusduodenal anastomosis. Group II (experiment)--one layer end to side anastomosis with evertion of the choledochus wall (neopapila). Group III (sham)--isolation and mobilization of the biliar tract with no choledocotomy. We got the biliar flow and pressure (pre and postoperative) monitorized on the 15 PO day the animals went trough an endoscopy and on the 30 PO day they were operated and the tissues were analysed under macro and microscopic view.
  
  
  RESULTS
  Regarding to biliar flow and manometry there were differences between all groups but the III. Animals in groups I and II showed intestinal metaplasia and diminished elastic fibers in the choledochus. All animals showed choledoco dilation.
  
  
  CONCLUSIONS
  The proposed technique allowed the same results as the standard technique.
authors.affiliation: Programa de Pós-Graduação em Técnica Operatória e Cirurgia Experimental da Universidade Federal de São Paulo - Escola Paulista de Medicina (UNIFESP-EPM).
authors.forename: Luiz Roberto
authors.initials: LR
authors.lastname: do Nascimento
authors.forename: Murched Omar
authors.initials: MO
authors.lastname: Taha
authors.forename: Djalma José
authors.initials: DJ
authors.lastname: Fagundes
authors.forename: Paulo de Oliveira
authors.initials: Pde O
authors.lastname: Gomes
authors.forename: Neil Ferreira
authors.initials: NF
authors.lastname: Novo
mesh_terms: D000714:Anastomosis, Surgical / Q000379:methods; D000818:Animals; D003135:Common Bile Duct / Q000601:surgery*; D004386:Duodenum / Q000601:surgery*; D008297:Male; D013552:Swine