6747
The diagnosis was FTC in 56 ( 9 . 6 % ) of the 582 patients with a preoperative diagnosis of hyperplastic nodule by US and 43 ( 27 . 7 % ) of the 155 patients with a diagnosis of follicular tumor by US .
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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:
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