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: Pediatrics
[{'content': "A previously healthy infant presents with recurrent episode of abdominal pain. The mother says that the child has been passing altered stool after episodes of pain, but gives no history of vomiting or bleeding per rectum. Which of the following is the most likely diagnosis? \nSelect and explain. \nA. Rectal Polyps, B. Intussuception, C. Meckel's Diveiculum, D. Necrotizing Enterocolitis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: The infant with recurrent episodes of abdominal pain passing currant jelly stool is having intussuception. It is the cause of intestinal obstruction in infancy. Ref: Essential pediatrics by O.P.Ghai 6th edn/ page 268.', 'role': 'assistant'}]