title: Relevance of residual disease after liver resection for incidental gallbladder cancer.
abstract: OBJECTIVE
  In patients diagnosed with incidental gallbladder cancer (GC), the benefit and optimal extent of further surgery remain unclear. The aims of this study were to analyse outcomes in patients who underwent liver resection following a diagnosis of incidental GC and to determine factors associated with longterm survival.
  
  
  METHODS
  A retrospective analysis of patients diagnosed with incidental GC between June 1999 and June 2010 was performed. Data covering demographics, clinical and surgical characteristics and local pathological stage were analysed.
  
  
  RESULTS
  A total of 24 patients were identified. All patients underwent a resection of segments IVb and V and lymphadenectomy. Histological examination revealed residual disease in 10 patients, all of whom presented with recurrent disease at 3-12 months. Overall 5-year survival was 53%. Increasing T-stage (P < 0.001), tumour-node-metastasis (TNM) stage (P= 0.003), and the presence of residual tumour in the resected liver (P < 0.001) were all associated with worse survival.
  
  
  CONCLUSIONS
  Aggressive re-resection of incidental GC offers the only chance for cure, but its efficacy depends on the extent of disease found at the time of repeat surgery. The presence of residual disease correlated strongly with T-stage and was the most relevant prognostic factor for survival in patients treated with curative resection.
authors: Liver and Transplant Division, Hospital Dr Cosme Argerich, Buenos Aires, Argentina. jlendoire@yahoo.com.ar
authors: Javier C
authors: JC
authors: Lendoire
authors: Luis
authors: L
authors: Gil
authors: Fernando
authors: F
authors: Duek
authors: Carlos
authors: C
authors: Quarin
authors: Verónica
authors: V
authors: Garay
authors: Gabriel
authors: G
authors: Raffin
authors: Marcelo
authors: M
authors: Rivaldi
authors: Oks
authors: O
authors: Alejandra
authors: Oscar
authors: O
authors: Imventarza
mesh_terms: D000328:Adult; D000368:Aged; D001118:Argentina; D002763:Cholecystectomy; D005260:Female; D005706:Gallbladder Neoplasms / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D006498:Hepatectomy / Q000009:adverse effects / Q000401:mortality; D006801:Humans; D033162:Incidental Findings; D053208:Kaplan-Meier Estimate; D008197:Lymph Node Excision; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D018365:Neoplasm, Residual; D012086:Reoperation; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome