54004
Furthermore , as a result of this injury , he suffered from a growth on his face that biographers and art historians have defined as a benign tumor .
 benign tumor
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 benign tumor