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Fig. 9B Transmesenteric hernia. Upper gastrointestinal contrast image
after Roux-en-Y gastric bypass procedure in 43-year-old woman shows distention
of afferent (white arrow) and efferent (black arrow) with
abrupt cutoff in mid efferent loop. Appearance is similar to mesocolic tunnel
stenosis but more loops of distended efferent loops are seen, suggesting
transmesenteric hernia, which was found at surgery.