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Definition Definition
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Clinical Features Clinical Features
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Anatomy and Physiology Anatomy and Physiology
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How to Approach the Image How to Approach the Image
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What Not to Miss What Not to Miss
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Differential Diagnosis Differential Diagnosis
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Common Variants Common Variants
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Clinical Issues Clinical Issues
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Further Reading Further Reading
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Cite
Abstract
Volvulus is defined as the twisting of small or large bowel around its mesenteric axis. This can cause varying degrees of obstruction as well as severe vascular compromise. -Chronic constipation and obtundation from narcotics or other medications can cause gaseous distention of the abdomen. The most frequent locations within the abdomen are sigmoid colon and cecum, because they are the most mobile segments of the colon. However, a volvulus of the stomach can also occur. An even less common volvulus is in the small bowel, which is called a closed-loop obstruction, caused by an abnormal rotation of the small bowel along its mesenteric axis; thus an obstruction occurs at two points. As a result of the volvulus, torsion and occlusion of mesenteric vessels will result in ischemia and necrosis. Therefore, this is considered a surgical emergency because the mortality is between 10-35%.
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