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Fig. 11B. —55-year-old man with history of right ureteral transitional cell carcinoma, now presenting with acute abdominal pain related to unsuspected malrotation with strangulated internal hernia. Axial contrast-enhanced CT scans obtained 1 year before A show findings of malrotation that were missed, including superior mesenteric artery—superior mesenteric vein inversion (arrowhead, B) and malpositioning of bowel with right-sided cecum (C, C). Note also right hydronephrosis from obstructing ureteral tumor (arrow, B).