retrograde intussusception

ret·ro·grade in·tus·sus·cep·tion

the invagination of a lower segment of the bowel into one just above.
References in periodicals archive ?
Retrograde intussusception is the most common type reported after both RYGB and LRYGB [5-8].
Retrograde intussusception after Roux-en-Y gastric bypass for morbid obesity.
Small bowel obstruction due to retrograde intussusception after laparoscopic Roux-en-Y gastric bypass.
At laparoscopy, there was a retrograde intussusception of the proximal common limb into the jejuno-jejunostomy.