New applications for endoscopy: the emerging field of endoluminal and transgastric bariatric surgery

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Abstract
Endoluminal and transgastric procedures are evolving concepts that combine the skills and techniques of flexible endoscopy with minimally invasive surgery. Precisely how this technology and skill set will be applied in the field of general surgery is not yet known, but the treatment of obesity with an endoluminal or transgastric procedure holds great promise. As the demand for bariatric surgery increases, efforts will be directed toward developing less morbid and less costly treatment options that can provide substantial weight loss and resolution of comorbid conditions. Natural orifice bariatric procedures may include short-term weight loss in preparation for a definitive laparoscopic procedure, revisional procedures to reduce stoma or pouch size or repair fistulas, or primary therapy that provides durable weight loss. The latter application will undoubtedly appeal to patients and referring physicians if it can be performed as an outpatient procedure with significantly less morbidity than a laparoscopic procedure. Early preclinical and clinical work has been published in this area, but many technical obstacles must be overcome before a primary endoluminal or transgastric bariatric procedure can be offered. This article reviews the endoluminal and transgastric technology currently available, the endoluminal procedures currently performed, and the future of these technologies with respect to bariatric surgery.