Yoshiaki Ota

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…

Detecting ureteral injury-a serious intraoperative and postoperative complication of hysterectomy-is a high level of difficulty if ureteral malformations are not identified preoperatively. A 39-year-old Japanese woman underwent total laparo…

OBJECTIVE: Adenomyosis-related infertility is increasingly being diagnosed, and surgical intervention has been suggested to improve fertility. Elastography, a noninvasive ultrasound technique, is promising for diagnosing and guiding the res…

Abstract Nearly 20 years have passed since the introduction of robotic surgery for total hysterectomy, and its development has accelerated. However, its advantages over laparoscopic and open surgeries remain unclear, especially since some i…

PROBLEM: What is the effect of SR-16234 (SR), a selective estrogen receptor (ER) modulator, on human endometriotic stromal cells (ESCs)? METHOD OF STUDY: Endometriotic tissues were obtained from 21 patients undergoing laparoscopic surgery …

Purpose: To test the theory that invaginated ovarian surface epithelium and endometrial implants on the ovary form ovarian endometriomas. Methods: Adhesion sites of ovarian endometrioma on the peritoneum and consecutive ovarian endometrioma…

BACKGROUND: This study aimed to examine the clinical characteristics of 11 patients undergoing laparoscopic adenomyomectomy guided by intraoperative ultrasound elastography and this technique's feasibility. PATIENTS AND METHODS: Eleven pat…

Adenomyosis is commonly treated by total hysterectomy. Adenomyomectomy is considered for women of reproductive age who wish to preserve their fertility. However, a high recurrence rate following adenomyomectomy has been reported because com…

PURPOSE: To evaluate the efficacy of two progestins, levonorgestrel intrauterine system (LNG-IUS) and dienogest (DNG), for adenomyosis. METHODS: = 81) groups as a controlled clinical trial for 72 months. Participants were classified by thre…

A low dose of dienogest (DNG) 1 mg/day is useful for treating dysmenorrhea in young women. However, the effect of DNG on bone turnover during bone growth and formation, rather than at maturity, is currently unknown even at low doses. We inv…

[This corrects the article DOI: 10.1016/j.heliyon.2020.e04628.].

Detecting adenomyosis in the myometrium is a challenge since it is infiltrative with ill-defined margins and can be often confused with uterine fibroids. However, recent advances, such as ultrasound elastography, have enabled its detection …

Abstract Background Endometriosis can potentially lead to the development of a malignant tumor. Most malignant tumors arising from the endometriosis originate from the ovarian endometrioma, whereas those arising from extragonadal lesions ar…

Abstract Background: Endometriosis can potentially lead to the development of a malignant tumor. Most malignant tumors arising from the endometriosis originate from the ovarian endometrioma, whereas those arising from extragonadal lesions a…

Deep infiltrating endometriosis (DIE) is the most severe form of endometriosis. It causes chronic pelvic pain, severe dysmenorrhea, deep dyspareunia, dyschezia, and dysuria, markedly impairing the quality of life of women of reproductive ag…

Deeply infiltrating endometriosis (DIE) is defined as subperitoneal invasion by endometriotic lesions. These lesions are considered very active and are strongly associated with pelvic pain. The incidence of DIE is reportedly 20 % in all cas…

Background Pain-relieving effects of dienogest against endometriosis are comparable to leuprolide acetate for 24 weeks. We assessed whether long-term dienogest administration reduces recurrence after endometrioma excision. Methods In this r…

Objective: We investigated the prognosis of women with ureteral endometriosis after laparoscopic ureteral resection and ureteroneocystostomy.Study Design: From 2008 through 2012, we followed nine cases of ureteral endometriosis after laparo…

Total laparoscopic hysterectomy (TLH) may be difficult to complete in patients with adhesions due to endometriosis or anatomical distortions due to large myomas and cervical myomas. Our purpose is to consider methods for completing TLH in t…

INTRODUCTION: Total laparoscopic hysterectomy has been reported as having a higher incidence of vaginal cuff dehiscence compared with the abdominal and/or vaginal hysterectomy. The cause of vaginal cuff dehiscence after total laparoscopic h…