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The causes of bowel motility disorders can vary â some may arise within the digestive tract, others may be arise from outside of the gut. Whatever the cause and wherever the origin of the problem, it ultimately leads to abnormal muscle contractions within the bowel wall.
Any of the less-common causes of small-bowel obstruction can be demonstrated on CT scans, and many of them have specific radiologic features. In patients with Crohn disease, narrowing of the small-bowel lumen and mural thickening (see the image below) are well depicted.