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Fig. 1A —87-year-old man with moderate jejunal diverticulosis on CT (not diagnosed prospectively) and marked jejunal diverticulosis on barium study. Axial contrast-enhanced CT image shows jejunal diverticula (representative diverticula denoted by white arrows) as multiple round, thin-walled structures with no recognizable folds. Note gas in nondependent portion and contrast material in dependent portion of several diverticula with air–contrast levels. One diverticulum (arrowhead) contains tiny gas bubbles and nonuniform contrast enhancement due to retained debris. Two duodenal diverticula (black arrows) are also seen.