“…Intussusceptions are believed to be caused by abnormal motility patterns because of intestinal neoplasia, foreign bodies, previous resection and anastomosis, parasitism, sudden dietary changes, enteritis, recent general anaesthesia or gastroduodenal ulcers (Haddad et al, 2021; Matsuda et al, 2013). Idiopathic intussusceptions have also been described in horses (Sasani et al, 2013). Duodenoduodenal intussusceptions are extremely rare in humans (Yalamarthi & Smith, 2005) and, to the authors' best knowledge, have so far not been described in horses.…”