Prediction of prognosis after trimodal therapy in patients with locally advanced squamous cell carcinoma of the oesophagus
European Journal of Cancer,  Clinical Article

Stahl M et al. – From the study it appears that the pathohistologic results can be a valuable surrogate marker for predicting long term survival and local tumour control in patients with locally advanced squamous cell carcinoma (SCC) of the oesophagus after preoperative radiochemotherapy and surgery. Moreover, even after intensive preoperative therapy a complete tumour resection seems to be an important precondition for long term survival.

Methods
  • Patients with oesophageal cancer from two multicentric prospective trials were selected for having received radiochemotherapy followed by macroscopic complete tumour resection.
  • Several pretreatment and treatment related factors were retrospectively analysed for their ability to serve as predictive markers.

Results
  • Overall 107 patients with squamous cell carcinomas stage T3-4 N and M0 were included in the analysis.
  • All of them had complete preoperative radiochemotherapy.
  • Microscopic (n=96) or macroscopic (N=11) complete resection was achieved by transthoracic oesophagectomy.
  • The median follow-up time exceeded 6years.
  • Local progression free and overall survival were significantly hampered in patients with residual tumour in their resected specimen (n=76) compared with patients who showed a pathohistologic complete tumour remission (n=31) (overall survival rate at 3years 25.2% versus 65.6%; hazard ratio (HR)=3.50 (95%-confidence interval (CI) 1.91–6.44); p<0.0001).
  • A multivariable analysis proved both resection status and pathohistologic results to be independent acting predictive factors for local progression free and overall survival after preoperative radiochemotherapy with surgery.

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