Koji Matsuo

IntroductionMaternal outcomes of pregnancy with subclinical hypothyroidism continue to be active areas of research interest. The objective of this study was to compare severe maternal morbidity at delivery between pregnant patients with sub…

PurposeTo assess national trends, characteristics, and delivery outcomes associated with gestational carriers (GC) pregnancies.MethodsThis cross-sectional study queried the Healthcare Cost and Utilization Project's National Inpatient Sample…

PurposeTo examine the utilization and characteristics related to the use of hysteroscopy at the time of endometrial evaluation for endometrial hyperplasia in the outpatient surgery setting.MethodsThis cross-sectional study queried the Healt…

BACKGROUND: Although hysteropexy has been used to preserve the uterus during uterine prolapse surgery for a long time, there is a scarcity of data that describe the nationwide patterns of use of this surgical procedure. OBJECTIVE: This stu…

PurposeTo examine feto-maternal characteristics and outcomes of morbidly obese pregnant patients who conceived with assisted reproductive technology (ART).MethodsThis cross-sectional study queried the Healthcare Cost and Utilization Project…

OBJECTIVE: To examine pregnancy characteristics and maternal morbidity at delivery among pregnant patients with a diagnosis of endometriosis. STUDY DESIGN: This cross-sectional study queried the Healthcare Cost and Utilization Project's Na…

INTRODUCTION: This study examined obstetric outcomes in patients diagnosed with uterine adenomyosis. MATERIAL AND METHODS: This historical cohort study queried the Healthcare Cost and Utilization Project's National Inpatient Sample. The st…

Association of intraoperative tumor spill and adverse oncologic outcome has been reported in various gynecologic and non-gynecologic malignancies. To date, this association has not been examined in endometrial cancer surgery. The objective …

Background and objectivesTo examine the association between hospital surgical volume and perioperative mortality of pelvic exenteration performed for gynecologic malignancies.MethodsA population-based retrospective study utilizing the Natio…

STUDY OBJECTIVE: The findings of previous studies have been inconsistent as to whether benign hysterectomy via minimally invasive laparoscopic surgery increases the risk of vesicoureteral injury when compared with laparotomy. The objectives…

ObjectiveTo examine the incidence and prognostic effects of intraoperative capsule rupture and to assess the effectiveness of postoperative chemotherapy for intraoperative tumor rupture in apparent stage I epithelial ovarian cancer.MethodsT…

ObjectiveTo profile patient characteristics associated with and outcomes of ovarian conservation at the time of hysterectomy in young women with minimal-risk endometrial cancer.MethodsA population-based retrospective analysis of the Nationw…

ObjectiveTo examine changes in performance and outcomes of pelvic exenteration for gynecologic malignancies.MethodsThis is a population-based retrospective study examining the Nationwide Inpatient Sample between 2001 and 2015. Women with ce…

ObjectiveTo examine the association between ovarian conservation and oncologic outcome in surgically-treated young women with early-stage, low-grade endometrial cancer.MethodsThis multicenter retrospective study examined women aged <50 with…

ObjectiveTo examine the trends of epithelial ovarian cancer histologic subtypes in Japan.MethodsA nationwide retrospective registry study was performed between 2002 and 2015 (Japan cohort, n = 48,640). Trends were also examined in The Surve…

INTRODUCTION: The long-term benefits of ovarian conservation (OC) in young women have been well-established, however short-term outcomes remain relatively understudied. We examined utilization and outcomes of OC at the time of hysterectomy …

Ovarian clear cell carcinoma (OCCC) is distinctive from other histological types of epithelial ovarian cancer, with genetic/epigenetic alterations, a specific immune-related molecular profile, and epidemiologic associations with ethnicity a…

PurposeWhile adenomyosis is one of the most common benign histologic findings in hysterectomy specimens of endometrial cancer, demographics of endometrial cancer arising in adenomyosis (EC-AIA) has not been well elucidated. The aim of this …

A 56-year-old G3P3 postmenopausal woman presented with a 5 month history of abnormal uterine bleeding and pelvic pain. A computed tomographic scan revealed a 5 cm right adnexal cystic mass in addition to a thickened, heterogenous endometriu…