86234
Total parenteral nutrition ( TPN ) is provided when the gastrointestinal tract is nonfunctional because of an interruption in its continuity ( it is blocked , or has a leak – a fistula ) or because its absorptive capacity is impaired .
 fistula
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:
 fistula