3519
This study indicates that the simultaneous presence of ITC and VEGFR - 1 expression at premetastatic sites is clinically significant for disease progression .
 ITC, premetastatic sites
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 ITC, premetastatic sites