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 10-month-old infants present with acute intestinal obstruction. Contrast enema X-ray shows the intussusceptions, likely cause is – \nSelect and explain. \nA. Peyer's patch hypertrophy, B. Meclde's diverticulum, C. Mucosal polyp, D. Duplication cyst", 'role': 'user'}, {'content': "Answer: A \nExplanation: Pathogenesis of intussusception \n\nBetween the age of 3 to 9 months, the cause of acute intussusception is idiopathic.\nIt is postulated that gastrointestinal infection or the introduction of new food proteins result in swollen Peyer's patches in the terminal ileum. The prominent mounds of tissue leads to mucosal prolapse of the ileum into the colon thus causing an intussusception.\nIn 2-8% of patient, recognizable lead points for the intussusception are found, such as a Meckel's diverticulum, intestinal polyp, neurofibroma, intestinal duplication, hemangioma or malignant condition such as lymphoma.", 'role': 'assistant'}]