Roux limb obstruction secondary to constriction at transverse mesocolon rent after laparoscopic Roux-en-Y gastric bypass

Narrowing at the transverse mesocolon rent is an uncommon cause of small bowel obstruction after retrocolic laparoscopic Roux-en-Y gastric bypass. Unlike internal hernias, which tend to occur later in the clinical course and are associated with significant weight loss, Roux limb obstruction occurs earlier after gastric bypass and is not associated with significant weight loss. Interrupted closure of the mesocolic window might reduce the risk of Roux compression.