Hiroshi Yoshida

BACKGROUND: Early detection of epithelial ovarian cancer (EOC) remains a major clinical challenge. Although serum tumor markers are widely used for detection, their diagnostic performance remains limited. We previously developed a comprehen…

Ovarian endometrioid carcinoma (OEC) accounts for ~10% of epithelial ovarian cancers and displays broad morphologic diversity that complicates diagnosis and grading. Recent data show that the endometrial cancer molecular taxonomy (DNA polym…

Epithelial ovarian cancer (EOC) is widely recognized as the most lethal gynecological malignancy; however, its early-stage detection remains a considerable clinical challenge. To address this, we have introduced a new method, named Comprehe…

BACKGROUND: Ovarian mesonephric-like adenocarcinoma (MLA) is a newly described histological type known for its aggressive behavior. This study aims to determine the frequency of ovarian MLA, review the existing literature, and elucidate its…

Ovarian mesonephric-like adenocarcinoma (MLA) is a rare cancer subtype. We describe a patient with ovarian MLA wherein liver metastases developed 1 month after surgery. A phenotypic analysis of the tumor was performed to identify molecular …

Ovarian clear cell carcinoma (OCCC) has a poor prognosis, and its therapeutic strategy has not been established. PRELP is a leucine-rich repeat protein in the extracellular matrix of connective tissues. Although PRELP anchors the basement m…

OBJECTIVE: To examine the safety and feasibility of total laparoscopic retrograde hysterectomy (TLreH) in patients with obliterated cul-de-sac due to severe endometriosis. STUDY DESIGN: This retrospective case-control observational study w…

This study aimed to clarify the genetic features of endometrioid-type endometrial cancer arising in adenomyosis (EC-AIA) using targeted sequencing and immunohistochemistry (IHC) for both carcinoma and adjacent adenomyosis tissues. We identi…

Cervical cancer is the fourth most common cancer in women worldwide and is predominantly caused by infection with human papillomavirus (HPV). However, a small subset of cervical cancers tests negative for HPV, including true HPV-independent…

•A 56-year-old woman developed two seromucinous borderline tumors 26 years apart.•The second cyst was diagnosed as a seromucinous borderline tumor associated with pelvic endometriosis.•The first ovarian cancer was re-diagnosed as an ovarian…

Endometriosis-related cervical neoplasms are rare, and their clinicopathological features and association with human papilloma virus infection are unclear. A postmenopausal woman with recently diagnosed cervical adenocarcinoma was referred …

Primary vulvar clear cell carcinoma (CCC) is extremely rare. In this article, we report a primary vulvar CCC along with immunohistochemical and gene mutation analyses results and literature review to discuss the clinicopathological features…

OBJECTIVE: Gynecologists occasionally encounter synchronous endometrial and ovarian endometrioid carcinoma (SEO-EC) patients who show favorable prognosis than locally advanced or metastatic disease patients. This study aimed to elucidate pr…

STUDY OBJECTIVES: The aim of this study is to evaluate the effects of vaginal estriol therapy in total laparoscopic hysterectomy (TLH) with gonadotropin-releasing hormone agonist (GnRH-a) treatment. DESIGN: Retrospective analysis. DESIGN …

A solitary pelvic tumor after treating a primary endometriosis-related neoplasm is usually considered a recurrence but may actually be a primary endometriosis-related peritoneal neoplasm. A Japanese woman in her late 60s was referred to our…

AIM: To investigate the differences in leiomyoma pathophysiology by patient age at the time of surgery and the possible significance of postmenopausal uterine leiomyomas, particularly variants. METHODS: We retrospectively reviewed data fro…

Empty follicle syndrome (EFS) has been defined as a condition where no oocytes can be retrieved for in vitro fertilization (IVF) even though ultrasound findings and estradiol (E2) levels suggest the presence of potential follicles. The EFS …

AIM: The aim of this study was to identify factors that can predict the resistance to parenteral therapy in patients with tubo-ovarian abscesses (TOA). MATERIAL AND METHODS: We conducted a case-control study involving 55 admitted patients …

Objective: Microwave endometrial ablation (MEA) with a 2.45 GHz microwave was first in Japan performed to treat intractable menorrhagia by Kanaoka et al. in 1998. Since then satisfactory results have been reported. The present study was con…

We report a rare case in which a cystic lesion in the cervix, caused by endometriosis, resulted in a massive vaginal hemorrhage. Cervical endometriosis is relatively common and is usually considered a mild condition. However, we report a ca…