Impact of esophageal cancer staging on overall survival and disease-free survival based on the 2010 AJCC classification by lymph nodes.

J Radiat Res · 2013 · PMC3589934 · PMID 23124992

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did not reach statistical significanceno p-value reported

[ 20 ] showed that post-operative radiotherapy increased the 5-year survival rate, though the results did not reach statistical significance.

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