Hiroyuki Fujiwara

ORCID: 0000-0002-8888-9937 · 26 papers in corpus
observational 2025
European journal of radiology ·doi:10.1016/j.ejrad.2025.112260

PURPOSE: To examine magnetic resonance imaging (MRI) features of mesonephric-like adenocarcinoma (MLA) of the uterine corpus. METHOD: MRI features of 19 patients with pathologically proven MLA of the uterine corpus were retrospectively com…

other 2025
International Journal of Gynecology & Obstetrics ·doi:10.1002/ijgo.70244

The authors have no conflicts of interest. Data sharing is not applicable to this article as no new data were created or analyzed in this study.

observational 2024
International Journal of Gynecology & Obstetrics ·doi:10.1002/ijgo.15565

OBJECTIVES: To investigate the association between adenomyosis and placenta accreta spectrum (PAS) and to evaluate the effect of assisted reproductive technology (ART) in mediating this association. METHODS: We retrieved data for singleton…

observational 2023
Neurology. Clinical practice ·doi:10.1212/cpj.0000000000200165

BACKGROUND AND OBJECTIVES: Gynecologic diseases such as uterine fibroids, endometriosis, and adenomyosis are common in women of reproductive age. Case reports and small case series have reported ischemic stroke in women with such common non…

case-report 2023
Cureus ·doi:10.7759/cureus.34852

Pregnancy following adenomyomectomy is challenging because uterine rupture or placenta accreta spectrum (PAS) is more likely to occur; however, optimal management has not yet been established. We herein present a case of uterine rupture wit…

case-report 2022
Case Reports in Obstetrics and Gynecology ·doi:10.1155/2022/3234784

Decidualization can originate in ovarian endometrioma by elevated serum progesterone levels during pregnancy, which mimics malignancy on ultrasonography. Moreover, decidualized ovarian endometrioma may rupture and cause acute abdominal pain…

observational 2021
Molecular and clinical oncology ·doi:10.3892/mco.2021.2425

A previous study by our group reported that removing a larger number of lymph nodes in patients with stage I ovarian clear cell carcinoma (OCCC) improved progression-free survival (PFS). The present study investigated whether clinical condi…

case-report 2019
Case Reports in Obstetrics and Gynecology ·doi:10.1155/2019/3120921

We describe a patient with bilateral cystic tumors of the pelvis. The left one rapidly grew during pregnancy and combined with the right one, whose clinical course made diagnosis difficult. A pregnant woman with a history of laparotomy was …

observational 2019
Journal of gynecologic oncology ·doi:10.3802/jgo.2019.30.e96

OBJECTIVE: To investigate the relationship between the precursors of high grade serous ovarian cancer (HGSOC) and the characteristics of patients with a low HGSOC risk in terms of the effects of pregnancy. METHODS: We prospectively examine…

diagnostic-accuracy 2015
Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine ·doi:10.1007/s13277-014-2738-7

Human epididymis protein 4 (HE4) levels and the Risk of Ovarian Malignancy Algorithm (ROMA) have recently been shown to improve the sensitivity and specificity of epithelial ovarian cancer (EOC) diagnosis. We evaluated HE4 levels and ROMA a…

observational 2015
·doi:10.1200/jco.2015.33.15_suppl.e16577

e16577 Background: Ovarian clear cell carcinoma (CCC) is relatively resistant to anticancer drugs, and its prognosis is poor even in stage I compared to other histologic types. Generally, it is indicated for postoperative chemotherapy, but …

observational 2014
International journal of gynecological cancer : official journal of the International Gynecological Cancer Society ·doi:10.1097/igc.0000000000000243

OBJECTIVE: Endometrial cancer often coexists with uterine adenomyosis. However, little is known about the clinical characteristics of these cases. Thus, cases of endometrial cancer occurring with and without uterine adenomyosis were compare…

rct 2009
European journal of obstetrics, gynecology, and reproductive biology ·doi:10.1016/j.ejogrb.2009.10.030

OBJECTIVE: To investigate the effectiveness of montelukast, a leukotriene receptor antagonist, in alleviating the symptoms of dysmenorrhea. STUDY DESIGN: This prospective, double-blind, randomized, placebo-controlled study was comprised of…

other 2008
Fertility and sterility ·doi:10.1016/j.fertnstert.2008.08.101

OBJECTIVE: To investigate the pathogenesis of endometriotic pain. DESIGN: Retrospective nonrandomized immunohistochemical study. SETTING: A university hospital, Department of Gynecology. PATIENT(S): Twenty human endometriotic specimens w…

lab-animal 2007
American journal of reproductive immunology (New York, N.Y. : 1989) ·doi:10.1111/j.1600-0897.2007.00507.x

PROBLEM: To investigate the molecular mechanism of endometriosis, gene expression profiling was analyzed in a rat endometriosis model. METHOD OF STUDY: An endometriosis model was induced by uterine autotransplantation in the peritoneal cav…

other 2007
Fertility and sterility ·doi:10.1016/j.fertnstert.2007.02.007

OBJECTIVE: To investigate the localization of the proteins osteopontin (OPN) and L-selectin (SELL). DESIGN: Retrospective nonrandomized immunohistochemical study in a surgically induced rat model of peritoneal endometriosis and in samples …

other 2007
Journal of Obstetrics and Gynaecology Research ·doi:10.1111/j.1447-0756.2007.00636.x

AIM: Transvaginal hydrolaparoscopy (THL) has recently been developed as a less invasive alternative to conventional laparoscopy. There are some reports that described the usefulness and prognostic value of diagnostic THL in infertile women.…

other 2007
Fertility and sterility ·doi:10.1016/j.fertnstert.2007.08.014

OBJECTIVE: To investigate the anti-inflammatory effect of n-3 eicosapentaenoic acid (EPA) compared with n-6 linoleic acid (LA) in an endometriosis rat model. We focused on the relationship between lipid metabolism and inflammatory reactions…

nonrandomized-trial 2005
Journal of Minimally Invasive Gynecology ·doi:10.1016/j.jmig.2005.06.014

STUDY OBJECTIVE: To investigate the feasibility and clinical usefulness of transvaginal salpingoscopy (TS) during transvaginal hydrolaparoscopy (THL) in infertile women. DESIGN: Retrospective study (Canadian Task Force classification II-3)…

other 2004
Family medicine
other 2004
The Japanese journal of antibiotics
other 2004
American journal of reproductive immunology (New York, N.Y. : 1989) ·doi:10.1111/j.1600-0897.2004.00166.x

PROBLEM: Although the presence of mast cells in endometriosis lesions has been reported, there have been no reports of their pathological localization in ovarian endometrial cysts. METHODS OF STUDY: The localization of mast cells in ovaria…

case-report 2003
Reproductive medicine and biology ·doi:10.1046/j.1445-5781.2003.00018.x

Since transvaginal hydrolaparoscopy (THL) was introduced as the first-line procedure in the early stage of the exploration of the tubo-ovarian structures in infertile women, it has been shown that THL is a less traumatic and a more suitable…

other 2003
Human cell ·doi:10.1111/j.1749-0774.2003.tb00146.x

STUDY OBJECTIVES: To investigate the pathophysiology of human endometriosis, we examined by morphological and molecular biological methods. METHODS: Samples of ovarian endometriosis and normal ovarian tissues were obtained laparoscopically…

observational 2003
Fertility and sterility ·doi:10.1016/s0015-0282(02)04549-1

OBJECTIVE: To evaluate the usefulness and prognostic value of transvaginal hydrolaparoscopy (THL) in infertile women. DESIGN: Retrospective study. SETTING: Jichi Medical School Hospital, Tochigi, Japan. PATIENT(S): Thirty-six patients wh…