Incidence of gastroenterostomy stenosis in laparoscopic Roux-en-Y gastric bypass using 21- or 25-mm circular stapler: a randomized prospective blinded study

We found a significant difference in the stenosis rate between the 21-mm and 25-mm circular stapled anastomoses in laparoscopic Roux-en-Y gastric bypass. The 21-mm staplers led to significantly more endoscopies than did the 25-mm staplers. Symptoms leading to endoscopy occurred significantly later with use of a 25-mm stapler than after a 21-mm stapler.