2656
[ Uncommon etiology of gastrointestinal bleeding : duodenal metastases from renal cell carcinoma ] .
 gastrointestinal, duodenal metastases, renal cell carcinoma
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 gastrointestinal, duodenal metastases, renal cell carcinoma