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World J Gastrointest Endosc. 2012 Jul 16;4(7):290-5. doi: 10.4253/wjge.v4.i7.290.

Stenosis in gastric bypass: Endoscopic management.

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  • 1Jesús Espinel, Endoscopy Unit, Gastroenterology Department, Hospital de León, 24071 León, Spain.


Gastric bypass is a treatment option for morbid obesity. Stenosis of the gastrojejunal anastomosis is a recognized complication. The pathophysiological mechanisms involved in the formation of stenosis are not well known. Gastrojejunal strictures can be classified based on time of onset, mechanism of formation, and endoscopic aspect. Diagnosis is usually obtained by endoscopy. The two main treatment alternatives for stomal stricture are: endoscopic dilatation (balloon or bouginage) and surgical revision (open or laparoscopic). Both techniques of dilation [through-the-scope (TTS) balloon dilators, Bougienage dilators] are considered safe, effective, and do not require hospitalization. The optimal technique for dilation of stomal strictures remains to be determined, but many authors prefer the use of TTS balloon catheters. Most patients can be successfully treated with 1 or 2 sessions. The need for reconstructive surgery of a stomal stricture is extremely rare.


Balloon dilation; Bougienage dilation; Endoscopic dilation; Gastric bypass; Gastrojejunal anastomosis; Obesity; Stenosis of the anastomosis; Stricture

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