Staging of abdominal arterial occlusive disease.
| Stage | Findings |
| I | Asymptomatic stage (detectable only by duplex sonography or angiography) |
| II | Angina abdominalis (postprandial/after-meal abdominal pain) |
| III | Abdominal persistent pain; malabsorption syndrome; possibly ischemic colitis (inflammation of the bowel due to reduced blood flow) |
| IV | Acute mesenteric artery occlusion with mesenteric infarction |