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Fig. 1. Schematic diagram of the gastrointestinal tract before (A) and after (B) roux-en-Y gastric bypass. Note that the newly formed gastric pouch (blue) is small to induce early satiety, and the bypassed biliary pancreatic small bowel limb (pink) decreases the surface area available for absorption. Note also that the excluded gastric remnant is no longer accessible by oral/antegrade route.
Int J Gastrointest Interv 2021;10:137~141 https://doi.org/10.18528/ijgii200053
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