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': "When the gas filled cysts are found in subserosa or submucosa of small intestine or colon, it is called ? \nSelect and explain. \nA. Pneumatosis cystoides intestinalis, B. Crohn's disease, C. Ulcerative colitis, D. Mesenteric cyst", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Pneumatosis cystoides intestinalis", 'role': 'assistant'}]