An abdominal ultrasound examination performed on two patients with abdominal pain showed segmental wall thickening of the colon that proved to be due to ischemic colitis. In one case, the typical "target lesion" was recognized. These findings could be confirmed with computed tomography, whereas a single contrast enema was unable to demonstrate the ischemic disease. In the second case, a typical five-layered structure of the bowel wall could be demonstrated. It is concluded that US can be useful in the early diagnosis of colonic ischemia.
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