title: Metabolic and endocrinological factors related to nephrolithiasis pre and post multiple techniques of bariatric surgery: a sistematic review.
abstract: BACKGROUND
  Despite of benefits of bariatric surgery for obesity treatment, the procedure may be related to some complications.
  
  
  OBJECTIVE
  Analyze studies to address the relation between nephrolithiasis and bariatric surgery.
  
  
  METHODS
  Ten papers about this theme were selected from 2005-2013 in Pubmed, describing the relation of nephrolithiasis or their risk factors with several types of bariatric surgery.
  
  
  RESULTS
  Retrospective studies with minimal follow-up of three years demonstrated 7,65% in surgery patients and 4,63% non-surgery with nephrolithiasis (p<0,05). Prospective studies (8 of 10) revealed large percentage of calculi appearing and significant increase in oxaluria.
  
  
  CONCLUSIONS
  There is correlation between obesity surgery and nephrolithiasis.
authors.affiliation: Hospital das Clínicas, Universidade Federal de Pernambuco, Recife, PE, Brazil.
authors.forename: Marcos Vinicius Ribeiro
authors.initials: MV
authors.lastname: dos Santos
authors.affiliation: Hospital das Clínicas, Universidade Federal de Pernambuco, Recife, PE, Brazil.
authors.forename: Gustavo Enrique Correia
authors.initials: GE
authors.lastname: Ferreira
authors.affiliation: Hospital das Clínicas, Universidade Federal de Pernambuco, Recife, PE, Brazil.
authors.forename: Eduardo Cirne Pedrosa
authors.initials: EC
authors.lastname: de Oliveira
authors.affiliation: Hospital das Clínicas, Universidade Federal de Pernambuco, Recife, PE, Brazil.
authors.forename: Flavio
authors.initials: F
authors.lastname: Kreimer
authors.affiliation: Hospital das Clínicas, Universidade Federal de Pernambuco, Recife, PE, Brazil.
authors.forename: Josemberg Marins
authors.initials: JM
authors.lastname: Campos
authors.affiliation: Hospital das Clínicas, Universidade Federal de Pernambuco, Recife, PE, Brazil.
authors.forename: Alvaro Antonio B
authors.initials: AA
authors.lastname: Ferraz
mesh_terms: D050110:Bariatric Surgery / Q000009:adverse effects* / Q000379:methods*; D004700:Endocrine System Diseases / Q000150:complications; D006801:Humans; D008659:Metabolic Diseases / Q000150:complications; D053040:Nephrolithiasis / Q000209:etiology*; D009765:Obesity / Q000601:surgery*; D012307:Risk Factors