title: Sinusoidal obstruction syndrome impairs long-term outcome of colorectal liver metastases treated with resection after neoadjuvant chemotherapy.
abstract: BACKGROUND
  Chemotherapy-induced liver injury is a considerable problem in patients undergoing surgery for colorectal liver metastases, since an increase in postoperative morbidity and mortality has been observed. We investigated whether liver damage had further implications on long-term outcome in these patients.
  
  
  METHODS
  Liver specimens from 196 patients resected for colorectal liver metastases were evaluated for chemotherapy-associated hepatic damage in the nontumorous liver. Injury patterns were correlated with recurrence free (RFS) and overall survival (OS). Factors leading to sinusoidal injury were identified.
  
  
  RESULTS
  Patients who developed grade 2 or 3 sinusoidal dilatation had a significantly shorter RFS (hazard ratio [HR] 2.05; 95% confidence interval [95% CI] 1.23-3.39, P = .005) and OS (HR 2.90; 95% CI 1.61-6.19, P < .001), compared to patients without this alteration. Those patients also had significantly more intrahepatic recurrences (66.7% vs 30.5%, P = .003). Other patterns of chemotherapy-associated liver damage (nonalcoholic steatohepatitis, fibrosis) were not associated with impaired survival. Factors indicating sinusoidal injury were oxaliplatin-based chemotherapy, tumor size >5 cm, and elevated alkaline phosphatase or gamma glutamyltransferase.
  
  
  CONCLUSIONS
  Sinusoidal obstruction syndrome due to oxaliplatin-based chemotherapy may not only compromise perioperative outcome, but can lead to early recurrence and decreased survival in the long term. Strategies to prevent this condition are clearly needed.
authors.affiliation: Department of Surgery, Medical University of Vienna, Vienna, Austria.
authors.forename: Dietmar
authors.initials: D
authors.lastname: Tamandl
authors.forename: Markus
authors.initials: M
authors.lastname: Klinger
authors.forename: Sandra
authors.initials: S
authors.lastname: Eipeldauer
authors.forename: Beata
authors.initials: B
authors.lastname: Herberger
authors.forename: Klaus
authors.initials: K
authors.lastname: Kaczirek
authors.forename: Birgit
authors.initials: B
authors.lastname: Gruenberger
authors.forename: Thomas
authors.initials: T
authors.lastname: Gruenberger
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D000069287:Capecitabine; D017024:Chemotherapy, Adjuvant; D015179:Colorectal Neoplasms / Q000150:complications / Q000473:pathology / Q000628:therapy*; D003131:Combined Modality Therapy; D003841:Deoxycytidine / Q000008:administration & dosage / Q000031:analogs & derivatives; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage / Q000031:analogs & derivatives; D005500:Follow-Up Studies; D006498:Hepatectomy; D006504:Hepatic Veno-Occlusive Disease / Q000209:etiology*; D006801:Humans; D002955:Leucovorin / Q000008:administration & dosage; D008113:Liver Neoplasms / Q000150:complications / Q000556:secondary / Q000628:therapy*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D020360:Neoadjuvant Therapy; D009364:Neoplasm Recurrence, Local / Q000473:pathology / Q000628:therapy; D009367:Neoplasm Staging; D009944:Organoplatinum Compounds / Q000008:administration & dosage; D000077150:Oxaliplatin; D011446:Prospective Studies; D015996:Survival Rate; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D009944:Organoplatinum Compounds; D000077150:Oxaliplatin; D003841:Deoxycytidine; D000069287:Capecitabine; D002955:Leucovorin; D005472:Fluorouracil