Kuniaki Ota

PurposeThis study aimed to develop international expert consensus statements on chronic endometritis (CE) through a comprehensive literature review of existing evidence and a modified Delphi approach.MethodsTen panelists of the Japan Societ…

PurposeTo estimate the prevalence and correlates of low serum 25-hydroxyvitamin D [25(OH)D] among women attending infertility clinics in Japan.MethodsWe conducted a multicenter cross-sectional study of 17 261 women with measured 25(OH)D. De…

BackgroundMicronutrient supplementation is widely used in infertility care and preconception management, yet clinical evidence supporting its effectiveness differs among vitamins.MethodsThis narrative review summarizes current evidence on w…

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…

Background/Objectives: Hysterosalpingography (HSG) is pivotal in delineating tubal pathology, but is associated with pain and exposure to ionizing radiation. This study investigated which reproductive factors predict HSG-identified tubal pa…

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…

Homocysteine is an amino acid naturally produced in the body and metabolized via the methionine cycle. High homocysteine levels can increase the risk of infertility and pregnancy complications, such as preeclampsia, preterm delivery, miscar…

Several studies have reported that vitamin D may modify human reproductive functions; however, the results are conflicting. We aimed to comprehensively evaluate serum vitamin D levels and examine the relationship between serum vitamin D lev…

About 60% of cases of recurrent pregnancy loss have unexplained etiology. Immunotherapy for unexplained recurrent pregnancy loss is still unestablished. A 36-year-old woman, not obese, had a stillbirth at 22 gestational weeks and a spontane…

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…

Background: Juvenile cystic adenomyosis (JCA) is a rare uterine lesion. We present the case of a young woman who was diagnosed with JCA and subsequently managed with laparoscopic cyst removal with sharp and blunt dissection. Moreover, we pr…

BackgroundPregnancy in a rudimentary horn is an extremely rare type of ectopic pregnancy. A rudimentary uterine horn pregnancy is associated with a risk of spontaneous rupture and bleeding during surgery due to the increased uterine blood f…

[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…

AIM: Menorrhagia and dysmenorrhea are common symptoms. Uterine adenomyosis is one of the causes of menorrhagia and dysmenorrhea. These symptoms often decrease the quality of life in women. Microwave endometrial ablation (MEA) is a recently …

Ureteral involvement is rare, with an estimated frequency of 10-14% in cases of deep infiltrating endometriosis. An important complication of ureteral involvement is asymptomatic loss of renal function. We reported that a 49-year-oId woman …