Yanai S

No ORCID on file · 19 papers in corpus · active 2017-2026

Study types

  • case-report 6
  • article 5
  • other 3
  • review 2
  • preprint 1

Condition tags

  • endometriosis 17
  • chronic_pelvic_pain 4
  • adenomyosis 4
  • endometrioma 3
  • dysmenorrhea 2
  • die_deep_infiltrating 1
other 2026
Journal of robotic surgery ·doi:10.1007/s11701-026-03274-z

This study compared surgical approaches and perioperative outcomes of nerve-sparing modified radical hysterectomy (NSmRH) for deep endometriosis (DE) using the da Vinci SP and Xi systems. This retrospective cohort study included consecutive…

review 2026
Journal of robotic surgery ·doi:10.1007/s11701-026-03299-4

Minimally invasive surgery, especially laparoscopic surgery, remains the standard treatment for endometriosis; however, robotic-assisted surgery (RAS) is also gaining adoption. Several meta-analyses have reported comparable perioperative ou…

review 2025
Journal of robotic surgery ·doi:10.1007/s11701-025-02448-5

To compare the surgical outcomes of robot-assisted hysterectomy (RAH) for benign diseases using da Vinci SP (SP) and da Vinci Xi (Xi). A retrospective study with propensity score matching (PSM) analysis. An urban general hospital in Japan. …

other 2025
European journal of obstetrics, gynecology, and reproductive biology ·doi:10.1016/j.ejogrb.2025.114756

STUDY OBJECTIVE: To investigate the feasibility of magnetic resonance imaging (MRI) in detecting and classifying adhesions between pelvic organs caused by endometriosis, comparing MRI findings to those obtained by laparoscopy. DESIGN: Pros…

case-report 2025
Journal of minimally invasive gynecology ·doi:10.1016/j.jmig.2024.10.019

OBJECTIVE: The evolution of nerve-sparing surgery has been supported by a growing body of literature on anatomic details, dissection techniques, and functional outcomes, suggesting that nerve-sparing surgery for deep endometriosis (DE) redu…

case-report 2025
Journal of minimally invasive gynecology ·doi:10.1016/j.jmig.2024.08.005

OBJECTIVE: The da Vinci SP Surgical System (SP) received regulatory approval for use in gynecological surgeries in Japan in 2023. Given the advantages of the precision of a robot, less pain, and the cosmesis of single-port surgery, the da V…

article 2024
Archives of gynecology and obstetrics ·doi:10.1007/s00404-024-07674-0

PURPOSE: Drug resistance and severe pelvic pain often warrant surgical intervention for treating deep endometriosis (DE); however, damage to the autonomic nervous system can occur because of anatomical considerations. We aimed to investigat…

2024
Cureus ·doi:10.7759/cureus.56602

Background Uterine weight is an important factor in determining the complexity of a hysterectomy. Although greater uterine weight increases operative time and blood loss in open or laparoscopic surgery, it remains uncertain whether this app…

case-report 2024
Fertility and sterility ·doi:10.1016/j.fertnstert.2024.07.015

OBJECTIVE: To demonstrate the anatomical and technical highlights of nerve-sparing deep endometriosis (DE) surgery with rectal discoid resection using a newer single-port robotic system. DESIGN: Step-by-step demonstration of this method wa…

case-report 2022
Fertility and sterility ·doi:10.1016/j.fertnstert.2022.08.004

OBJECTIVE: Although dLPE is not overly rare, isolation of the autonomic nerves from dLPE cannot always be guaranteed. In patients with endometriosis lesions that are embedded in the deep parametrium, nerve-sparing techniques are no longer c…

article 2022
Archives of gynecology and obstetrics ·doi:10.1007/s00404-022-06462-y

Study objectiveTo investigate the short-term outcomes of laparoscopic ureteroneocystostomy in patients with ureteral endometriosis (UE).DesignRetrospective cohort study of consecutive patients who underwent surgery for the ureter endometrio…

case-report 2022
Journal of minimally invasive gynecology ·doi:10.1016/j.jmig.2021.07.013

STUDY OBJECTIVE: Some articles have reported the surgical management of Alcock canal syndrome (ACS) using the transperineal [1], transgluteal [2], or conventional laparoscopic approach [3,4]. In 2015, Rey and Oderda [5] reported the first r…

article 2021
Fertility and sterility ·doi:10.1016/j.fertnstert.2021.03.014

ObjectiveTo describe the anatomic and technical highlights of a novel nerve-sparing surgery in deep endometriosis (DE) using near-infrared (NIR) fluorescence technology and indocyanine green (ICG).DesignStepwise demonstration of this method…

preprint 2021
·doi:10.21203/rs.3.rs-732028/v1

Abstract Study Objective: To investigate the short-term outcomes of laparoscopic ureteroneocystostomy in patients with ureteral endometriosis (UE). Design: Retrospective cohort study of consecutive patients who underwent surgery for the ur…

case-report 2021
Journal of minimally invasive gynecology ·doi:10.1016/j.jmig.2020.07.018

OBJECTIVE: To demonstrate anatomic and technical highlights of a robot-assisted nerve plane-sparing eradication of deep endometriosis (DE). DESIGN: Stepwise demonstration of the technique with narrated video footage. SETTING: An urban gen…

article 2020
Journal of minimally invasive gynecology ·doi:10.1016/j.jmig.2020.05.028

ObjectiveTo show technical highlights of a nerve-sparing laparoscopic eradication of deep endometriosis (DE) with posterior compartment peritonectomy.DesignDemonstration of the technique with narrated video footage.SettingAn urban general h…

2019
Gynecologic Oncology ·doi:10.1016/j.ygyno.2019.08.007

ObjectiveTo examine the association between ovarian conservation and oncologic outcome in surgically-treated young women with early-stage, low-grade endometrial cancer.MethodsThis multicenter retrospective study examined women aged <50 with…

other 2018
Journal of minimally invasive gynecology ·doi:10.1016/j.jmig.2017.06.027
article 2017
European journal of obstetrics, gynecology, and reproductive biology ·doi:10.1016/j.ejogrb.2017.07.014

ObjectiveTo evaluate the effect of dienogest (DNG) in preventing the occurrence of pain and endometriomas after laparoscopic resection of uterosacral ligaments (USLs) with deep infiltrating endometriosis (DIE).Study designThis retrospective…