Intussusception is divided into primary and secondary types, with 95% being primary cases, most commonly seen in infants and young children. This is due to the fact that the mesentery of the ileocecal part in infants and young children is not yet fully fixed and has a greater degree of mobility, which are structural factors that facilitate the occurrence of intussusception. The remaining 5% are secondary cases generally occurring in older children, where the affected intestines often have a clear organic cause, such as a Meckel's diverticulum turning into the ileal lumen, serving as the starting point for intussusception. Other causes like intestinal polyps, tumors, duplications, or abdominal purpura can cause the intestinal wall to swell and thicken, which can also trigger intussusception.