Retrograde Intussusception after Roux-en-Y Gastric Bypass

Retrograde intussusception (RI) is a rare long-term complication after Roux-en-Y gastric bypass (RYGB) (0.1%-0.3%), however, its etiology still remains unclear [1]. The origin of intussusception after gastric bypass is different from that of intussusception of other causes and is likely related to motility disorders in the divided small bowel, especially in the Roux limb [2]. This rare condition may cause obstruction and lead to bowel strangulation if not recognized and treated promptly. Contrast-enhanced computerized tomography (CECT) scan of the abdomen represents the diagnostic test of choice, however, a definite diagnosis cannot be established unless the patient undergoes surgical exploration [3]. For uncomplicated cases, where the bowel appears to be viable, simple reduction may suffice. Nevertheless, resection of the affected segment is recommended when bowel gangrene ensues.

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