Jejuno-Jejunal Intussusception after Roux-en-Y Gastric Bypass.

INTRODUCTION: Roux-en-Y gastric bypass is the most common bariatric procedure in Belgium. Retrograde intussusception is identified as a rare late complication.

METHODS: Here we present two cases of retrograde jejuno-jejunal intussusception after Roux-en-Y gastric bypass.

RESULTS: Women who experienced excellent weight loss appear most prone. Although ectopic pacemaking is suggested, the exact pathophysiologic mechanism remains unclear. Simple manual reduction seems to be insufficient as treatment. Lowest recurrence rates are noted after segmentectomy.

CONCLUSION: Retrograde intussusception is a rare late complication after RYGB which is becoming more and more relevant due to increasing procedure volumes. Retrograde peristalsis by ectopic pacemakers could be identified as a cause. Segmentectomy appears to be the best treatment of choice.