title: Factors for postoperative gallstone occurrence in patients with gastric cancer: a meta-analysis.
abstract: OBJECTIVE
  To evaluate risk factors for gallstones after gastrectomy.
  
  
  METHODS
  To identify documents published from 1990 to 2011 the Pubmed, Cochrane Library, Springer Link, CBM and WanFang databases were searched and a meta-analysis was performed with RevMan 5.2 software for odds ratios and 95%CIs.
  
  
  RESULTS
  Fifteen studies were selected for the meta-analysis. The pooled ORs [95%CIs] were 0.56 [0.43, 0.73], (P<0.0001) for digestive tract reconstruction, 0.80 [0.54, 1.17], (P=0.25) for pylorus preservation, 0.33[0.15, 0.75], (P=0.008) for resection scope of stomach, 0.33 [0.15, 0.75], (P=0.008) for lymphadenectomy, and 0.13 [0.05, 0.33], (P<0.0001) for vagotomy.
  
  
  CONCLUSIONS
  Digestive tract physical reconstruction and vagus nerve preservation can reduce the morbidity of gallstones after gastrectomy. Total gastrectomy can add to the morbidity of galltones as does increasing the degree of lymph node dissection. There was no significant difference in gallstones with or without pylorus preservation.
authors.affiliation: Department of Medical Quality Control, West China Hospital, Sichuan University, Chengdu, China E-mail : chenmin_hxyy@163.com.
authors.forename: Xiang-Jun
authors.initials: XJ
authors.lastname: Chen
authors.forename: Nian
authors.initials: N
authors.lastname: Li
authors.forename: Ying-De
authors.initials: YD
authors.lastname: Huang
authors.forename: Shuang
authors.initials: S
authors.lastname: Ren
authors.forename: Fang
authors.initials: F
authors.lastname: Liu
authors.forename: Lian
authors.initials: L
authors.lastname: Chen
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.forename: Min
authors.initials: M
authors.lastname: Chen
mesh_terms: D016022:Case-Control Studies; D042882:Gallstones / Q000209:etiology*; D005743:Gastrectomy / Q000009:adverse effects*; D006801:Humans; D008197:Lymph Node Excision / Q000009:adverse effects*; D011183:Postoperative Complications / Q000209:etiology*; D011379:Prognosis; D012307:Risk Factors; D013274:Stomach Neoplasms / Q000150:complications / Q000601:surgery*