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. Surgical intervention is seldom necessary. We present a case of Ogilvie's syndrome in which a healthy 76-year-old man developed life-threatening pseudo-obstruction following rib polytrauma after a mechanical fall. Pneumatosis coli was evident radiologically, prompting emergency exploratory laparotomy. Operative findings of serosal tearing and ischaemic colitis necessitated treatment with right hemicolectomy and ileostomy formation. Microbiological and histopathological analyses proved negative for inflammatory, obstructive and infectious colitides. The case emphasises the importance of early recognition and timely intervention in the management of this rare yet potentially fatal cause of megacolon.

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