This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
[{'content': "Meckel' diverticulum is patent of: \nSelect and explain. \nA. Vitello intestinal duct, B. Urachus, C. Organic diaphragm, D. None", 'role': 'user'}, {'content': "Answer: A \nExplanation: (Vitello-intestinal duct) (1159-Baily & Love 25th)Meckel's Diverticum - It represents the patent intestinal end of the vitello-intestinal duct.* Occurs in 2% of patients are usually 2 inches (5cm/ in length and are situated 2 feet (60 cm) fromileocaecal valve.* It should be sought when a normal appendix is found at surgery for suspected appendicitis* If a silent Meckel's is found incidentally during the course of an operation, It can be left alone provided it is wide - mouthed and not thickened.", 'role': 'assistant'}]