5499
Pathological analysis indicated that generated tumors corresponded to well - differentiated fibrosarcomas with distinct and intersecting bundles and spindle cells .
 tumors, fibrosarcomas, bundles, spindle cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 tumors, fibrosarcomas, bundles, spindle cells