A 10 month old infants present with acute intestinal obstruction. Contrast enema X-ray shows the intussusceptions. Which of the following is the most likely cause?

Most common cause of intussusception in an infant is hyperophy of Peyer's patches in the terminal ileum from an antecedent viral infection that acts as a lead point. Peristaltic action of the intestine then causes the bowel distal to the lead point to invaginate into itself. Idiopathic intussusception occurs in children between approximately 6 and 24 months of age. Beyond this age group, cause of intussusception includes polyps, malignant tumors such as lymphoma, enteric duplication cysts, and Meckel's diveiculum. Ref: Schwaz's Principles of Surgery, 9th Edition, Chapters 28, 39