title: [The efficacy of preoperative portal vein embolization for extended hepatectomy: a meta-analysis].
abstract: OBJECTIVE
  To investigate the clinical value of preoperative portal vein embolization (PVE) for extended hepatectomy.
  
  
  METHODS
  A comprehensive Pubmed, Medline and Ovid database search to identify all registered literature on portal vein embolization. Meta-analysis was performed to assess the result of PVE.
  
  
  RESULTS
  A total of 9 literatures provided data sufficiently enough for analysis involving in 494 patients. The results showed that postoperative liver failure was higher in the non-PVE group than the PVE group, but there was no difference in postoperative mortality between the PVE and non-PVE group; in sub-category analysis of hepatocellular carcinoma and liver metastasis of colorectal cancer, there was no difference in postoperative 1, 3 and 5-year survival rate between the PVE group and non-PVE group; 1 literature about liver metastasis of colorectal cancer show there was significant difference in postoperative metastasis between the PVE and non-PVE group; several patients after PVE didn't performed hepatectomy due to disease progress.
  
  
  CONCLUSIONS
  PVE is a safe and effective procedure to prevent postresection liver failure due to insufficient liver remnant, but surgeon should be cautious to choose the patient for PVE.
authors.affiliation: Department of General Surgery, Ren Ji Hospital, Shanghai Jiao Tong University of Medicine, Shanghai 200127, China.
authors.forename: Wen-yi
authors.initials: WY
authors.lastname: Zhao
authors.forename: Meng
authors.initials: M
authors.lastname: Luo
authors.forename: Yong-wei
authors.initials: YW
authors.lastname: Sun
authors.forename: Qing
authors.initials: Q
authors.lastname: Xu
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Gang
authors.initials: G
authors.lastname: Zhao
authors.forename: Zhi-yong
authors.initials: ZY
authors.lastname: Wu
mesh_terms: D004621:Embolization, Therapeutic; D006498:Hepatectomy; D006801:Humans; D017093:Liver Failure / Q000209:etiology / Q000517:prevention & control; D011169:Portal Vein; D011183:Postoperative Complications / Q000517:prevention & control; D011300:Preoperative Care; D016019:Survival Analysis; D016896:Treatment Outcome