Ischemic enteritis

Ischemic enteritis is ischemia of the small bowel.

General

• Typically elderly and due to atherosclerosis.
• Rare.
• High mortality.
• May occur together with ischemia of the colon, i.e. ischemic colitis, in which case it is known as ischemic enterocolitis.

Etiologies:

• Atherosclerosis.
• Vasculitis.
• Embolism.
• Thrombosis.
• Small bowel obstruction.

Microscopic

Features:

• See ischemic colitis.

DDx:

• Shock.
  • Infection.
  • Cardiogenic shock.
• Crohn's disease.
• Radiation changes.
• Drugs/toxins.

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Small Bowel, Excision:
     - Ischemic enteritis with serositis and microabscesses. 
     - Resection margins viable.
     - NEGATIVE for evidence of malignancy.

See also

• Small bowel.
• Ischemic colitis.