title: Survival after resection of multiple hepatic colorectal metastases.
abstract: BACKGROUND
  Hepatic resection is potentially curative in selected patients with colorectal metastases. It is a widely held practice that multiple colorectal hepatic metastases are not resected, although outcome after removal of four or more metastases is not well defined.
  
  
  METHODS
  Patients with four or more colorectal hepatic metastases who submitted to resection were identified from a prospective database. Number of metastases was determined by serial sectioning of the gross specimen at the time of resection. Demographic data, tumor characteristics, complications, and survival were analyzed.
  
  
  RESULTS
  From August 1985 to September 1998, 155 patients with four or more metastatic tumors (range 4-20) underwent potentially curative resection by extended hepatectomy (39%), lobectomy (42%), or multiple segmental resections (19%). Operative morbidity and mortality were 26% and 1%, respectively. Actuarial 5-year survival was 23% for the entire group (median = 32 months) and there were 12 actual 5-year survivors. On multivariate analysis, only number of hepatic tumors (P = .005) and the presence of a positive margin (P = .003) were independent predictors of poor survival.
  
  
  CONCLUSIONS
  Hepatic resection in patients with four or more colorectal metastases can achieve long-term survival although the results are less favorable as the number of tumors increases. Number of hepatic metastases alone should not be used as a sole contraindication to resection, but it is clear that the majority of patients will not be cured after resection of multiple lesions.
authors.affiliation: Hepatobiliary Service, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.
authors.forename: S M
authors.initials: SM
authors.lastname: Weber
authors.forename: W R
authors.initials: WR
authors.lastname: Jarnagin
authors.forename: R P
authors.initials: RP
authors.lastname: DeMatteo
authors.forename: L H
authors.initials: LH
authors.lastname: Blumgart
authors.forename: Y
authors.initials: Y
authors.lastname: Fong
mesh_terms: D000328:Adult; D000368:Aged; D015179:Colorectal Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000401:mortality* / Q000556:secondary / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009519:New York City / Q000453:epidemiology; D011379:Prognosis; D011446:Prospective Studies; D012720:Severity of Illness Index; D016019:Survival Analysis