title: Anatomic segmental resection compared to major hepatectomy in the treatment of liver neoplasms.
abstract: BACKGROUND
  Familiarity with liver anatomy and refinements in operative technique have led to interest in liver conservation when dealing with hepatic tumors. There is thought to be less morbidity, less blood loss (EBL), a shorter hospital stay (LOS), and no penalty for long-term survival with segmental hepatectomy.
  
  
  METHODS
  One hundred ninety-six patients who underwent segmental (SEG group) (N=70) or major (MAJOR group) (N=126) hepatectomy for liver neoplasms were retrospectively reviewed. Clinical parameters of mortality, morbidity, EBL, LOS, and actuarial survival in patients with colorectal metastases were examined.
  
  
  RESULTS
  There were no differences in age or gender between the SEG and MAJOR groups. There were no deaths among 64 non-cirrhotic patients in the SEG group and 4 deaths (3.2%) among 124 non-cirrhotic patients in the MAJOR group (p=0.19). There were 4 postoperative complications in the SEG group (5.6%) and 22 in the MAJOR group (17.3%) (p<0.05).The EBL for the SEG group was 912+/-842 ml compared to 3675+/-3110 ml in the MAJOR group (p<0.001).The hospital LOS for the SEG group was 9.4+/-6.4 days and for the MAJOR group 10.2+/-5.9 days (p=0.32). Life table analysis of survival for resection of colorectal metastases showed two-year patient survival of 40% in the SEG group (N=17) and 45% for the MAJOR group (N=46).
  
  
  CONCLUSIONS
  Segmental resections were associated with less EBL and fewer postoperative complications. There was a trend towards fewer deaths in non-cirrhotic patients, and no apparent penalty for a smaller hepatic resection in long-term survival. While sometimes technically more challenging, segmental resections are preferable when feasible and should be utilized in efforts to conserve liver parenchyma.
authors.affiliation: Department of Surgery, University of Missouri-Kansas City, School of Medicine, Kansas City, Missouri, USA. thelling@carondelet.com
authors.forename: Thomas S
authors.initials: TS
authors.lastname: Helling
authors.forename: Benoit
authors.initials: B
authors.lastname: Blondeau