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Eur Radiol. 2021 Oct 18; doi: 10.1007/s00330-021-08318-6. Epub 2021 Oct 18.

Colonic involvement in acute mesenteric ischemia: prevalence, risk factors, and outcomes.

European radiology

Aida Ksouri, Pauline Copin, Fanny Bonvalet, Lilian Bozi, Dominique Cazals-Hatem, Lorenzo Garzelli, Yves Panis, Emmanuel Weiss, Yves Castier, Yoram Bouhnik, Olivier Corcos, Valérie Vilgrain, Maxime Ronot, Alexandre Nuzzo

Affiliations

  1. Department of Radiology, Beaujon Hospital, APHP.Nord, 92110, Clichy, France.
  2. Department of Pathology, Beaujon Hospital, APHP.Nord, 92110, Clichy, France.
  3. Department of Colorectal Surgery, Beaujon Hospital, APHP.Nord, 92110, Clichy, France.
  4. Université de Paris, INSERM UMR 1148, Laboratory for Vascular Translational Science, 75018, Paris, France.
  5. Intensive Care Unit, Beaujon HospitalAPHP.Nord, 92110, Clichy, France.
  6. Department of Vascular Surgery, Bichat Hospital, APHP.Nord, 75018, Paris, France.
  7. Intestinal Stroke Center, Department of Gastroenterology, IBD and Intestinal Failure, Beaujon Hospital, APHP.Nord, 92110, Clichy, France.
  8. UMR 1149, Université de Paris, INSERM, 75018, Paris, CRI, France.
  9. Department of Radiology, Beaujon Hospital, APHP.Nord, 92110, Clichy, France. [email protected].
  10. UMR 1149, Université de Paris, INSERM, 75018, Paris, CRI, France. [email protected].

PMID: 34657969 DOI: 10.1007/s00330-021-08318-6

Abstract

OBJECTIVES: This study aimed to investigate the prevalence, risk factors, and outcomes of colonic involvement in patients with acute mesenteric ischemia (AMI).

METHODS: CT scans from a prospective cohort of 114 AMI patients treated in an intestinal stroke center between 2009 and 2018 were blindly reviewed by two radiologists. Colon involvement was defined on CT scan by the presence of at least one of the following CT colonic features: wall thickening, pneumatosis, decreased wall enhancement, dilatation, or perforation. In addition, the clinical, biological, and radiological characteristics of patients with and without colonic involvement were compared to identify risk factors for colonic involvement on CT and its impact on morbidity and mortality.

RESULTS: Colonic involvement was identified in 32/114 (28%) patients with AMI, the right colon being more frequently involved (n = 29/32, 91%). Wall thickening (n = 27/32) was the most common CT finding. Occlusion of the inferior mesenteric artery was the only statistically significant risk factor for colonic involvement (35% vs. 15%, p = 0.02). Patients with colonic involvement on CT vs. those without had more frequently transmural colonic necrosis (13% vs. 0%, p = 0.006), short bowel syndrome (16% vs. 4%, p = 0.04), need for long-term parenteral support (19% vs. 5%, p = 0.03), and death during follow-up (22% vs. 10%, p = 0.03).

DISCUSSION: In patients with AMI, colonic involvement is associated with increased morbidity and mortality and should be carefully searched for during initial CT scan assessment.

KEY POINTS: • In a prospective cohort of acute mesenteric ischemia patients from an intestinal stroke center, 28% had an associated colonic involvement on CT. • Colonic involvement on CT most commonly affected the right colon, and the occlusion of the inferior mesenteric artery was the only risk factor. • Colonic involvement on CT was associated with increased morbidity and mortality and should be carefully searched for during initial CT scan assessment.

© 2021. European Society of Radiology.

Keywords: Colon; Mesenteric ischemia; Necrosis; Prognosis

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