This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rectum, Subject name: Surgery
[{'content': 'A child is passing blood with act of defecation. The probable diagnosis is \nSelect and explain. \nA. Juvenile rectal polyp, B. Adenomatous Polyposis, C. Rectal ulcer, D. Post Surgery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Juvenile rectal polypRef : Bailey & Love 26th ed. /1224The most common cause of bleeding per rectum in children is juvenile rectal polyp up to adolescence age. Though in infants and young children (up to 1 yrs) the cause is anal fissure.', 'role': 'assistant'}]