Ogilvie's syndrome treated with an emergency laparotomy, right hemicolectomy and end ileostomy.

Acute colonic pseudo-obstruction (ACPO), or Ogilvie's syndrome, is a rare clinical entity in which there is massive non-toxic colonic dilatation in the absence of a mechanically obstructing lesion. It is an important yet poorly recognised cause of surgical morbidity and mortality occurring typically in elderly patients with multiple comorbidities. ACPO can often be reversed conservatively with colonoscopic or nasogastric decompression.