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
A 10 month old infants presents with acute intestinal obstruction. Contrast enema X-ray shows the intussusceptions, likely cause is - 
Select and explain. 
A. Peyer's patch hyperophy, B. Meckle's diveiculum, C. Mucosal polyp, D. Duplication cyst
A: Peyer's patch hyperophy
Answer: A: Peyer's patch hyperophy 
Explanation: Ans. is 'a' i.e., Peyer's patch hyperophyPathogenesis of intussusceptiono Between the age of 3 to 9 months, cause of acute intussusception is idiopathic.o It 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.In 2-8% of patient, recognizable lead points for the intussusception are found, such as a meckel's diveiculum, intestinal polyp, neurofibroma, intestinal duplication, hemangioma or malignant condition such as lymphoma.