Acute small bowel ischemia | Acute colonic ischemia |
Age varies with etiology of ischemia | 90 percent of patients over age 60 years |
Acute precipitating cause is typical | Acute precipitating cause is rare |
Patients appear severely ill | Patients do not appear severely ill |
Pain is usually severe, tenderness is not prominent early | Mild abdominal pain, tenderness present |
Bleeding uncommon until very late | Rectal bleeding, bloody diarrhea typical |
MRA or MDCT angiography may be considered as the initial diagnostic test; angiography is recommended if there is strong clinical suspicion | Colonoscopy is procedure of choice |
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