Arnold-Chiari malformation

A 65-year-old man, with a past medical history of appendicectomy and bowel resection for volvulus, presented with a 2-day history of acute abdominal pain. The patient was diagnosed as having small bowel obstruction secondary to adhesion which did not settle with conservative management. He required a laparotomy, adhesiolysis and resection of 2 inches of small bowel. Five days after his laparotomy, he suffered a brief episode of loss of consciousness, so a computed tomography scan and subsequent magnetic resonance imaging scan of the head were performed.