Kunihiko Hayashi

STUDY QUESTION: What is the association between endometriosis and the type and age of menopause? SUMMARY ANSWER: Women with endometriosis had a 7-fold increased risk of undergoing surgical menopause rather than natural menopause and were m…

PURPOSE: This study evaluated the feasibility of single-nucleotide polymorphism (SNP) genotyping using dried blood spot (DBS) samples stored under various conditions, based on the genotyping success rate and concordance with whole blood res…

Importance: Early menarche and early menopause are associated with increased risk of cardiovascular disease (CVD) in midlife, but little is known about the association between reproductive life span and the risk of CVD. Objective: To invest…

BACKGROUND: Because of the increased number of diagnosed cases of endometriosis or adenomyosis resulting in infertility, many women require assisted reproductive technology (ART) to become pregnant. However, incidences of obstetric complica…

BACKGROUND: Endometriosis, which occurs in approximately 10% of women of reproductive age, is defined as the presence of endometrial tissue outside the uterus. Women with endometriosis are more likely to have difficulty conceiving and tend …

OBJECTIVE: To classify diseases based on age at peak incidence to identify risk factors for later disease in women's life course. DESIGN: A cross-sectional baseline survey of participants in the Japan Nurses' Health Study. SETTING: A nation…

BACKGROUND: The prevalence and risk factors for endometriosis may differ according to diagnosis methodologies, such as study populations and diagnostic accuracy. We examined risk profiles in imaging-diagnosed endometriosis with and without …

Background: The prevalence and risk factors for endometriosis may differ according to diagnosis methodologies, such as study populations and diagnostic accuracy. We examined risk profiles in imaging-diagnosed endometriosis with and without …

OBJECTIVE: To investigate the clinical features of patients in Japan with malignant transformation of ovarian endometrioma. PATIENTS: Thirty-three patients diagnosed with ovarian cancer presumably arising from endometrioma were recruited re…

Copyright © 2015 Toshiyuki Yasui et al. This is an open access article distributed under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original …

To address the contrasting findings regarding how pain is related to endometriosis, the relationship between pain and stage of endometriosis was dissected differently by the chief complaint to eliminate selection biases. A total of 1,092 wo…