*9.2.2 Stenosis*

With regard to stenosis after bariatric surgery, the following causes of stenosis should be divided:


Stenosis after bariatric surgery is defined as lumen constriction to less than 10 mm. The therapy consists of an endoscopic controlled balloon dilatation. For the primary stenosis after sleeve gastrectomy (30 mm) achalasia balloons with very good clinical results are used stenosis sleeve.
