II. Causes: Gastrointestinal

  1. Peritonitis
  2. Pancreatitis
  3. Early Appendicitis
  4. Mesenteric Adenitis
  5. Gastroenteritis
  6. Colitis
  7. Intestinal Obstruction

III. Causes: Hematologic

IV. Causes: Vascular

  1. Mesenteric Thrombosis
  2. Abdominal Aortic Aneurysm
  3. Splenic artery aneurysm
  4. Mesenteric Artery aneurysm

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