6826
The complete response rate in patients treated with pixantrone has been significantly higher than in those receiving other chemotherapeutic agents for treatment of relapsed / refractory aggressive non-Hodgkin lymphoma .
 non-Hodgkin lymphoma
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:
 non-Hodgkin lymphoma