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Endoscopic variceal ligation Illustration and Icon
Endoscopic variceal ligation
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A gastroenterology illustration shows endoscopic variceal ligation (EVL) within the esophageal lumen. An endoscope-mounted band ligator deploys elastic bands around protruding submucosal varices—dilated veins due to portal hypertension—resulting in strangulation of the vascular columns. The hierarchy depicted is diseased blood vessels within the mucosa and submucosa of the esophagus, an organ of the upper gastrointestinal tract. This therapeutic endoscopic procedure achieves hemostasis and prevents rebleeding by inducing thrombosis and obliteration of the variceal channels.
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