Sayama S
No ORCID on file
· 14 papers in corpus
· active 2017-2026
Study types
- article 5
- other 3
- preprint 3
- case-report 2
Condition tags
- adenomyosis 12
- endometriosis 2
- dysmenorrhea 1
- infertility 1
Top journals
- Journal of Obstetrics and Gynaecology Research 3
- Reproductive sciences (Thousand Oaks, Calif.) 2
- The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians 2
- The journal of obstetrics and gynaecology research 1
- Journal of perinatal medicine 1
Frequent coauthors
- Seisuke Sayama 13
- Yutaka Osuga 13
- Mari Ichinose 12
- Keiichi Kumasawa 12
- Kenbun Sone 12
- Ichinose M 12
- Takayuki Iriyama 12
- Seyama T 12
- Osuga Y 11
- Kumasawa K 11
other
2026
The association between adenomyosis and uterine torsion, a rare, serious obstetric condition, remains unclear and has not been systematically investigated. This study aimed to elucidate the incidence, risk factors, and clinical characterist…
2025
ObjectiveIntestinal disorders (ID) impose a significant burden on preterm infants. Although previous studies have examined individual risk factors for types of ID such as necrotizing enterocolitis (NEC), meconium-related ileus (MRI), and fo…
other
2025
Adenomyomectomy, a therapeutic option for women with adenomyosis who wish to preserve their fertility, has been reported to pose a risk of developing placenta accreta spectrum (PAS) and uterine rupture in future pregnancies. However, the sp…
preprint
2025
Objective: To elucidate the incidence, risk factors, and clinical characteristics of uterine torsion in pregnancies complicated by adenomyosis, which remains unstudied to date. Design: Retrospective cohort study. Setting: University Hospita…
case-report
2023
A uterine artery pseudoaneurysm (UAP) is a life-threatening complication during pregnancy and postpartum. Early diagnosis of exophytic UAP rupture is difficult due to the absence of vaginal bleeding. This study reports the case of a 31-year…
article
2023
OBJECTIVES: Adenomyosis is associated with unfavorable perinatal outcomes, and recent case reports show that some women with adenomyosis experience pain at the adenomyosis lesion during pregnancy and have detrimental perinatal outcomes. Thi…
preprint
2023
Abstract Background Adenomyosis is known to be associated with unfavorable perinatal outcomes, but the patient population among women with adenomyosis who is at high risk for adverse perinatal outcomes remains unclear. Recent case reports s…
article
2023
OBJECTIVES: Although adenomyosis is reportedly associated with adverse pregnancy outcomes, clinical factors related to the high risk of obstetric complications are unclear. This study aimed to elucidate the characteristics of adenomyosis le…
article
2023
AIM: We aimed to investigate the associations of endometriosis and adenomyosis with pregnancy complications by using a large-scale Japanese database. METHODS: We retrospectively analyzed 145 590 singleton pregnancies from the Japan Perinat…
other
2023
BACKGROUND: Adenomyosis is associated with unfavorable perinatal outcomes; however, the effect of an adenomyomectomy on pregnancy outcomes remains unclear. Pregnancy following an adenomyomectomy has been reported to be associated with a hig…
preprint
2022
Objective To clarify the clinical characteristics of pain developing in adenomyosis lesions during pregnancy and the perinatal outcomes associated with this phenomenon. Study Design Retrospective cohort study. Setting A tertiary hospital in…
case-report
2022
Imaging and histological changes occurring in adenomyosis due to pregnancy are unclear. A 38-year-old nulliparous woman presented with dysmenorrhea and infertility. Pelvic magnetic resonance imaging (MRI) showed diffuse-type adenomyosis. Fo…
article
2022
Uterine fibroids are known to degenerate during pregnancy, but it is unknown if similar pathologic condition occurs in adenomyosis. A 38-year-old para 1 woman exhibited uterine tenderness and a markedly elevated inflammatory response at 22 …
article
2017
OBJECTIVE: To evaluate the potential impact of adenomyosis on the pregnancy outcomes by retrospectively investigating adenomyosis-complicated pregnancy cases. METHODS: We performed a retrospective case-control study. Forty-nine singleton pr…