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
[{'content': "Retractile mesenteis may be seen in \nSelect and explain. \nA. Ormonds's disease, B. Gardner' syndrome, C. Turner's syndrome, D. Down's syndrome", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Ormond's disease", 'role': 'assistant'}]