Tomonori Ishikawa

OBJECTIVE: To study the earliest timepoint at which serum human chorionic gonadotropin (hCG) can predict live birth after blastocyst frozen embryo transfer, and to determine the cutoff values for hCG levels on days 7-11 after frozen-thawed …

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…

The effects of body mass index (BMI) on assisted reproductive technology (ART) outcomes such as ovarian dysfunction, poor ovum quality, and endometrial dysfunction have been studied; however, many aspects remain controversial. Therefore, we…

Endometrial receptivity array (ERA)—an objective tool used in assisted reproductive technology—is used for personalized embryo transfer in in vitro fertilization. Hydrosalpinx affects implantation through various mechanisms. However, its ef…

Objective: Endometrioid borderline ovarian tumor accounts for 0.2％ of all ovarian epithelial tumors, and 63％ of them are associated with endometriosis. In this report, we present a case of an infertile woman with ovarian endometrioma, which…

AIM: The Japan Society of Obstetrics and Gynecology implemented a registry report system for the clinical practice of assisted reproductive technology in 1986. The aggregated results from 1992 to 2014 are reported herein. METHODS AND RESUL…

PURPOSE: This study aimed to clarify the risks of adverse pregnancy outcomes in patients who conceive singletons after frozen embryo transfer (FET) during a hormone replacement cycle and their offspring. METHODS: A retrospective cohort stu…

Objective: The purpose of this study is to investigate the significance of early second-look laparoscopy (ESLL) and to evaluate post-operative adhesion formation after myomectomy by laparotomy.Patients: 57 women who wanted to conceive in th…