5930
Fourteen percent of patients were microscopically positive for right paraesophageal node metastasis , and the incidence was smaller than that for pre - and right paratracheal node metastasis ( 46 % ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None