Reduced-Port Sleeve Gastrectomy for Morbidly Obese Japanese Patients: a Retrospective Case-Matched Study

  • Manabu Amiki
  • Yosuke SekiEmail author
  • Kazunori Kasama
  • Srinivasulu Pachimatla
  • Michiko Kitagawa
  • Akiko Umezawa
  • Yoshimochi Kurokawa
Original Contributions



Reduced-port laparoscopic surgery remains controversial due to technical challenges that can lead to suboptimal outcomes, and data pertaining to operative and clinical outcomes of reduced-port sleeve gastrectomy (RPSG) vs. conventional laparoscopic sleeve gastrectomy (CLSG) are lacking.


This retrospective case-matched study aimed to compare midterm (2-year) outcomes of RPSG and of CLSG.


Patients included in the study had undergone laparoscopic bariatric surgery at our center between 2010 and 2017. Thirty-one consecutive female patients who underwent RPSG were compared to a sex-, age-, body mass index–matched group of 31 patients who underwent CLSG. Outcomes were evaluated and compared between groups.


Estimated blood loss volume, incidences of intraoperative and postoperative complications, and length of postoperative hospital stay did not differ significantly between the 2 groups. Operation time was significantly greater in the RPSG group than in the CLSG group (148.7 ± 22.6 vs. 120.2 ± 25.9 min, respectively; p < 0.001). Excess weight loss at 1 year was 105.9% and 109.7%, respectively (p = 0.94) and at 2 years was 101.1% and 105.3%, respectively (p = 0.64). One RPSG patient required placement of additional trocars because of bleeding from short gastric vessels, but conversion to open surgery was not required.


RPSG is feasible in carefully selected bariatric patients and results in midterm outcomes comparable to those observed after CLSG. Good cosmesis is a potential benefit of RPSG.


Bariatric surgery Sleeve gastrectomy Reduced-port surgery 



The authors thank Prof. Tina Tajima for her assistance in presenting our findings in English.

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

Ethical Approval

All procedures performed in our study involving human participants were in accordance with the ethical standards of the institutional and/or Japanese national research committees and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed Consent

Consent to use their anonymized data for research purposes has been obtained from all included in the study.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Weight loss and Metabolic Surgery CenterYotsuya Medical CubeTokyoJapan
  2. 2.Ramdev Rao Memorial General HospitalSivananda Rehabilitation HomeKukutpally HyderabadIndia

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