This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Enteo-enteric fistula is seen in: March 2011 
Select and explain. 
A. Ulcerative colitis, B. Crohn's disease, C. Both of the above, D. None of the above
B: Crohn's disease
Answer: B: Crohn's disease 
Explanation: Ans. B: Crohn's diseaseWith progression of the Crohn's disease, adhesions and transmural fissuring, intra-abdominal abscesses and fistula tracts can developEntero-enteric fistulae can occur into adjacent small bowel loops or the pelvic colon