Diagnosis of intussusception in the horse may be difficult as abdominocentesis rarely reveals any abnormalities. This is due to the strangulated portion of gut being contained within the intussuscipiens. In the case of jejuno-jejunal intussusceptions, rectal examination may reveal a sausage-shaped, tubular structure in the mid abdomen of the horse. The presence of melaena is a significant finding and may raise clinical suspicion of intussusception. Abdominal ultrasonography may reveal a characteristic target or 'bulls-eye' lesion on transverse section. Peristalsis in the affected segment is reduced or absent. Oedema and thickening (>3mm) of the intestinal wall are often seen with a distended, fluid-filled region proximal to the intussusception. | Diagnosis of intussusception in the horse may be difficult as abdominocentesis rarely reveals any abnormalities. This is due to the strangulated portion of gut being contained within the intussuscipiens. In the case of jejuno-jejunal intussusceptions, rectal examination may reveal a sausage-shaped, tubular structure in the mid abdomen of the horse. The presence of melaena is a significant finding and may raise clinical suspicion of intussusception. Abdominal ultrasonography may reveal a characteristic target or 'bulls-eye' lesion on transverse section. Peristalsis in the affected segment is reduced or absent. Oedema and thickening (>3mm) of the intestinal wall are often seen with a distended, fluid-filled region proximal to the intussusception. |