title: Effects of preoperative chemotherapy on liver function tests after hepatectomy.
abstract: OBJECTIVE
  Surgical resection of liver metastases is performed increasingly frequently after chemotherapy, which can induce fatty degeneration, possibly modifying the postoperative course after hepatectomy. This study evaluated the effect of chemotherapy on postoperative liver function tests according to the use of preoperative chemotherapy or not.
  
  
  METHODS
  Thirty-two patients were operated on for isolated breast cancer hepatic metastases, after stabilization or complete response to systemic therapy. The first group included 20 patients operated on after chemotherapy (9 major and 11 minor hepatic resections). The second group included 12 patients operated on without chemotherapy (3 major and 9 minor hepatic resections).
  
  
  RESULTS
  Histological examination after chemotherapy confirmed micronodular fatty degeneration in 85% of cases, versus none in the control group (P = 0.05). Fall in prothrombin time on day 1 (D1) was more marked in the chemotherapy group (58%) versus control group (74%) (P = 0.001). gamma-glutamyl transpeptidase did not rise on D7 in the chemotherapy group (1.4 x N), even after major hepatectomy (1.6 x N), in contrast with the control group, in which the mean gamma-glutamyl transpeptidase on D7 was 4.6 x N after major hepatectomy and 2 x N after minor hepatectomy (P = 0.05).
  
  
  CONCLUSIONS
  Chemotherapy induces almost constant fatty degeneration of the liver. Hepatic regeneration in the postchemotherapy liver is delayed, as reflected by a later and lower elevation of gamma-glutamyl transpeptidase. The predictive risk of liver failure, reflected by prothrombin time, following minor hepatectomy on postchemotherapy liver is similar to that of major hepatectomy to healthy liver.
authors.affiliation: Service de Chirurgie Générale et Digestive, Hôpital Lariboisière 2 rue Ambroise Paré, 75475 Paris, France. marc.pocard@sat.ap-hop-paris.fr
authors.forename: M
authors.initials: M
authors.lastname: Pocard
authors.forename: A
authors.initials: A
authors.lastname: Vincent-Salomon
authors.forename: J
authors.initials: J
authors.lastname: Girodet
authors.forename: R J
authors.initials: RJ
authors.lastname: Salmon
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects* / Q000627:therapeutic use; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000601:surgery; D056486:Chemical and Drug Induced Liver Injury / Q000175:diagnosis*; D003131:Combined Modality Therapy; D005260:Female; D006498:Hepatectomy; D006801:Humans; D008111:Liver Function Tests; D008113:Liver Neoplasms / Q000188:drug therapy / Q000556:secondary* / Q000601:surgery; D020360:Neoadjuvant Therapy; D011183:Postoperative Complications / Q000139:chemically induced* / Q000175:diagnosis