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J Obes Metab Syndr. 2018 Mar;27(1):25-34. English. Review.
Kang SH , Park YS , Ahn SH , Park DJ , Kim HH .
Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.

Bariatric surgery is an established and effective treatment, not only to combat morbid obesity, but also to address associated metabolic comorbidities. At this time, the cutoff for bariatric or metabolic surgery in terms of body mass index (BMI) is decreasing, making it more feasible for certain individuals to consider minimally invasive surgical options. Innovations in the technique have led to the application of laparoendoscopic single-site surgery (LESS) in the field of bariatrics, which uses a single or no incision in the performance of weight-reducing surgery. To date, there is no consensus regarding patient selection though most candidates for single-port bariatric surgery are female. Some doctors suggest that single-port bariatric surgery may not be recommended in patients with BMI of more than 50 kg/m², height of more than 180 cm, and xiphoid–umbilicus distance of more than 20 cm. Sleeve gastrectomy (SG) is now the most widely performed bariatric surgery worldwide and single-port SG (SPSG) is already established as a routine procedure in various institutions. Current evidence shows that SPSG is less painful and demonstrates higher rates of patient satisfaction regarding the wound. SPSG is feasible and is recommendable in patients who meet certain criteria. Furthermore, endoscopic treatment modalities such as intragastric balloons and endoluminal malabsorptive devices are being developed to bridge the gap between medical and surgical treatments. Nevertheless, there is still insufficient evidence to prove the superiority of LESS bariatric surgery over conventional laparoscopic surgery. Large, well-designed prospective analyses are needed to determine the criteria for selecting patients suitable to undergo LESS bariatric surgery and to predict the procedure's role in the growth of bariatric surgery.

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