Acute colonic pseudo-obstruction (ACPO), also known as Ogilvie syndrome, is an enteric dysmotility characterized by acute dilatation of the colon unrelated to any mechanical cause. In 1948, Ogilvie described two patients with colonic dilatation associated with malignant infiltration of the celiac plexus without evidence of a mechanical obstruction and attributed the syndrome to sympathetic deprivation. In 1958, Dudley et al. used the term “pseudo-obstruction” to describe the same clinical and radiographic appearance with no evidence of mechanical obstruction discovered during laparotomy.