Left Hypochondrium or Transumbilical Single-Incision Laparoscopic Sleeve Gastrectomy for the Treatment of Severe Obesity: Surgical Technique and Results of a Tertiary Referral Bariatric Center

Background Technical aspects of single-incision laparoscopic sleeve gastrectomy (SILSG) vary depending on surgeon’s experience and availability of surgical equipment. We have performed more than 3000 SILSGs using standardized technique with left hypochondrium or transumbilical access. The aim of this study is to describe the SILSG technique in a stepwise manner providing technical tips and pitfalls for a left hypochondrium or transumbilical approach and report results of SILSG experience in a tertiary referral bariatric center. Methods A detailed description of left hypochondrium and transumbilical SILSG is provided. Data from all consecutive patients who underwent SILSG between August 2010 and August 2017 were prospectively collected and retrospectively analyzed and reported. Results One thousand eight hundred patients underwent SILSG, from which 384 (21.3%) using a transumbilical approach. Mean age was 42.3 years, median BMI 45.3 kg/m 2 , and median operative time 88 min. An additional port was required in 89 patients (4.9%). Postoperative mortality and morbidity rates were 0.05% and 7.5%, respectively. Relaparoscopy and/or endoscopic treatment were required for intra-abdominal bleeding in 27 patients (1.5%) and staple-line leakage in 35 patients (1.9%). Mean excess weight losses were 71.1%, 73.7%, and 70.4% at 1, 2, and 4 years after SILSG, respectively. Two years after SILSG, sustained statistical significant remission of major obesity-related comorbidities was noted. Incisional hernia occurred in 39 patients (2.1%). Conclusions The use of specific instruments allows standardization of left hypochondrium SILSG, which can be routinely performed for the treatment of severe obesity. Transumbilical approach for SILSG should be reserved for well-selected patients and experienced bariatric surgeons. Graphical Abstract