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Fig. 1B. —59-year-old woman with massive upper gastrointestinal bleeding. Maximum-intensity-projection CT image obtained in oblique sagittal plane reveals duodenal varices (long arrow) with efferent vessel draining through right gonadal vein and right renal vein (short arrow) to inferior vena cava (IVC). Afferent vessel originates in proximal branches of superior mesenteric vein (arrowhead).