<prompt> A 10 month old infants presents with acute intestinal obstruction. Contrast enema X-ray shows the intussusceptions, likely cause is -Peyers patch hyperophyMeckles diveiculumMucosal polypDuplication cyst  <response>: Ans. is a i.e., Peyers 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 peyers 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 meckels diveiculum, intestinal polyp, neurofibroma, intestinal duplication, hemangioma or malignant condition such as lymphoma. 