title: The Oncosurge strategy for the management of colorectal liver metastases - an external validation study.
abstract: BACKGROUND
  Because most patients with colorectal liver metastases (CRLM) present to general surgeons and oncologists without a specialist interest in their management, a computer program (OncoSurge) has been created that identifies individual patient resectability and recommends optimal treatment strategies. The aim of this study was to validate the Oncosurge strategy by comparing its recommendations with the decisions made by a multidisciplinary (MDT) meeting, in a supra-regional hepatobiliary referral centre, using real cases with known outcomes.
  
  
  METHODS
  We reviewed the records and imaging of 98 consecutive patients with CRLM, who had been referred for decision making to our MDT meeting between January 1, 2004 and December 31, 2004. All patient and tumour characteristics were entered onto the Oncosurge decision model, which was accessed at www.evidis.com/oncosurge/
  
  
  RESULTS
  There was concordance between Oncosurge and MDT decisions in 93/98 cases. The observed kappa (kappa) was 0.850 (95% CI: 0.728-0.972). In descriptive terms, a kappa score greater than 0.8 equates to "almost perfect agreement".
  
  
  CONCLUSIONS
  Our results demonstrate the validity of the Oncosurge system when compared to one year of decision making in an established hepatobiliary MDT meeting. This confirms the utility of the Oncosurge system for decision making, audit and educational purposes.
authors.affiliation: Department of Surgery, University Hospital Aintree, Lower Lane, Liverpool, L9 7AL, UK. doreilly@doctors.org.uk
authors.forename: D A
authors.initials: DA
authors.lastname: O'Reilly
authors.forename: M
authors.initials: M
authors.lastname: Chaudhari
authors.forename: M
authors.initials: M
authors.lastname: Ballal
authors.forename: P
authors.initials: P
authors.lastname: Ghaneh
authors.forename: A
authors.initials: A
authors.lastname: Wu
authors.forename: G J
authors.initials: GJ
authors.lastname: Poston
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015179:Colorectal Neoplasms / Q000473:pathology / Q000601:surgery*; D003133:Commission on Professional and Hospital Activities; D003657:Decision Making; D020000:Decision Support Systems, Clinical / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000556:secondary / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D010347:Patient Care Planning; D013813:Therapy, Computer-Assisted