An intussusception is an invagination or 'telescoping' of a length of intestine (the intussusceptum) into an adjacent, more distal segment (the intussuscipiens). The small intestine is the most common site for this to occur and the affected segment may range in length from a few centimeters up to a metre. Intussuception in the horse most commonly involves the ileum (ileo-caecal or ileo-ileal). Jejuno-jejunal intussusceptions also occur in the horse but they are considerably less common. | An intussusception is an invagination or 'telescoping' of a length of intestine (the intussusceptum) into an adjacent, more distal segment (the intussuscipiens). The small intestine is the most common site for this to occur and the affected segment may range in length from a few centimeters up to a metre. Intussuception in the horse most commonly involves the ileum (ileo-caecal or ileo-ileal). Jejuno-jejunal intussusceptions also occur in the horse but they are considerably less common. |