Publications by authors named "Kiyoshi Yoshino"

Background: Lenvatinib plus pembrolizumab (LP) therapy has emerged as an effective treatment for patients with advanced or recurrent endometrial cancer. However, limited data are available regarding its outcomes in real-world settings. This study aimed to identify prognostic factors associated with the efficacy of LP therapy.

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Background: In rare cases, cancer cells adjacent to the skin migrate intraepithelially and reach the epidermis, presenting a histological appearance similar to that of Paget's disease; this phenomenon is termed pagetoid spread. Herein, we report a case of vulvar adenocarcinoma with pagetoid spread, in which the primary lesion could not be identified outside the vulva.

Case: An 84-year-old woman, presented with a 5-cm tumor in the right vulva.

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Background: Studies using 16S rRNA gene sequencing have extensively examined the vaginal microbiota changes of pregnant women. However, no study has examined these changes considering the time of day at which vaginal fluid samples were collected from near-term pregnant women.

Objective: To describe the vaginal microbiota of Japanese near-term pregnant women with normal pregnancy outcomes and potential vaginal microbiota changes from wake-up to bedtime.

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Objective: Cervical cancer rates in Japan (16.0/100,000) exceed the global average rate (11.3/100,000, according to the High/Very-High Human Development Index in 2020).

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To report a rare case of recurrent ectopic pregnancy in an ipsilateral fallopian tube remnant after left salpingectomy for tubal pregnancy. A 33-year-old patient presented with suspected ectopic pregnancy. The patient had previously undergone a left salpingectomy for a tubal pregnancy.

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The immunoreactive (IR) subtype is one of the subtypes of high-grade serous ovarian carcinoma (HGSOC) with intra-tumoral lymphocytic infiltration. A positive prognostic correlation between IR subtype and R0 + optimal surgery has been reported. This study investigates the prognostic significance of tumor-infiltrating lymphocytes (TILs) in the suboptimal surgery group of HGSOCs.

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Introduction: Pseudoaneurysm following gynecologic cancer surgery is a rare complication that can become fatal when it ruptures. Common sites of pseudoaneurysms are the external iliac artery, hypogastric artery, and aorta, which are located around the lymphadenectomy site. There are no previous reports of ruptured inferior epigastric (IEA) artery pseudoaneurysms after gynecologic cancer surgery.

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Article Synopsis
  • The study aimed to investigate why pregnant women with glucose intolerance often have large infants, focusing on amino and fatty acid transport in the placenta, beyond just glucose transport.
  • Researchers analyzed postpartum placental tissues from 101 eligible deliveries, finding higher expression levels of certain transporters (LAT1 and placenta-FABPpm) in women with glucose intolerance compared to those without.
  • The results suggest that, despite controlled blood sugar levels, managing other nutrients like amino acids and fatty acids in glucose-intolerant pregnancies is crucial for fetal growth.
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Background: The spontaneous rupture of an artery aneurysm during the perinatal period is considered a serious complication associated with the physiological alteration by pregnancy and delivery. The rupture of an ovarian artery aneurysm is rare and leads to rapid retroperitoneal hemorrhage. Here, we report one case complicated by postpartum hypertensive disorder of pregnancy associated with massive bleeding into retroperitoneal cavity by the spontaneous rupture of ovarian artery aneurysm after caesarean section, and reviewed previous literature.

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Introduction And Importance: Laparoscopic gonadectomy for nonpalpable glands in the inguinal canal, particularly in patients with Complete Androgen Insensitivity Syndrome (CAIS), presents technical challenges and is infrequently reported. While laparoscopic surgery in young women is minimally invasive and offers cosmetic advantages, it may require an additional inguinal incision depending on gonad location.

Case Presentation: A 16-year-old phenotypic female with a chief complaint of primary amenorrhea was diagnosed with 46, XY karyotype and CAIS.

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Objective: The prognostic value and clinical usage of peritoneal cytology in endometrial cancer are uncertain. This study aimed to determine whether positive cytology is associated with the prognosis for endometrial cancer.

Methods: A Japanese nationwide retrospective registry study was conducted between 2012 and 2019.

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The posterior pituitary (PP) hormones oxytocin (OXT) and arginine vasopressin (AVP) are synthesized within the hypothalamic nucleus and released from the PP into systemic circulation. Hypothalamic AVP projects its axons into the external layer of median eminence (eME) and regulates anterior pituitary hormone secretion during stress responses. Although similar as PP hormones, we demonstrate distinct regulatory roles of estrogen in hypothalamic OXT and AVP dynamics.

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To examine whether patterns, such as the timings of onset or recovery from sleep disturbance, are associated with later developmental problems, including autism spectrum disorder (ASD). Mothers participating in the Japan Environment and Children's Study with a child aged 3 years were included in the analyses. Children were assessed for short sleep and frequent awakenings at 1 month, 6 months, and 1 year of age.

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Introduction: Herlyn-Werner-Wunderlich syndrome (HWWS) is characterized by uterine didelphys, unilateral cervical obstruction, and ipsilateral renal defects. Owing to its rarity, no standard surgical approach exists.

Presentation Of Case: An 11-year-old girl with severe dysmenorrhea had a duplicated uterus, a right cervical hemorrhagic cyst, and right ipsilateral kidney agenesis, indicative of HWWS.

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Article Synopsis
  • - The study analyzed data from the Japan Society of Obstetrics and Gynecology tumor registry from 2012 to 2019 to assess the status and treatment of endometrial cancer in Japan.
  • - Out of 82,969 patients, younger patients tended to receive more chemotherapy, while surgical treatments like laparoscopic or robot-assisted surgeries increased annually, with specific diagnoses linked to advanced stages.
  • - The findings highlight important trends and clinicopathological details that help inform treatment strategies and improve understanding of endometrial cancer over multiple years.
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Cytokine release syndrome (CRS) is a systemic inflammatory condition caused by an excessive immune response and cytokine overproduction. CRS is a life-threatening condition that is often associated with chimeric antigen receptor T-cell therapy. Despite the increased use of immune checkpoint inhibitors (ICIs), ICI-induced CRS remains rare.

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Background: Lifelong health is dependent on prenatal growth and development, influenced by the placental intrauterine environment. Charged with dual functions--exchange of oxygen and nutrients as well as a barrier against toxins--the placenta itself is susceptible to environmental exposure to heavy metals.

Objective: To examine the use of placenta weight as a biomarker for heavy metal exposure using a large Japanese cohort of pregnant women.

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Background: The impact of parent-childbearing age on child development at 36 months of age is controversial.

Aims: We used data from a large cohort study with multiple imputation and mediation analyses of variables.

Methods And Procedures: A total of 72,606 parent-child pairs from the Japan Environment and Children's Study were included in the study.

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Article Synopsis
  • Adenocarcinoma of the cervix, specifically mesonephric carcinoma, is a rare type of cancer with unclear treatment guidelines and chemotherapy sensitivity; this report discusses a case involving a 30-year-old female diagnosed with advanced stage IIA2 adenocarcinoma after presenting with abnormal bleeding.
  • Due to a SARS-COV-2 infection, she received two rounds of paclitaxel-carboplatin chemotherapy to manage surgical risks before undergoing a total hysterectomy.
  • After surgery, histopathological analysis confirmed the diagnosis of stage IIA2 mesonephric carcinoma, and post-surgery treatment with additional chemotherapy led to no recurrence of cancer in the following 13 months, marking a notable response to the neoad
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Robotic-assisted surgery enables precise manipulations with magnified vision, stereoscopic vision, and forceps with multi-joint functions. It requires unique procedures such as position setting, port placement, roll-in, and docking, which lead to prolonged operation and anesthesia time. Five conditions described below were established at our institution to reduce the time to the initiation of console: (1) changing the patients' position from the flat lithotomy position to the spread legs position; (2) attaching a Hasson cone to hold the umbilical cannula stable; (3) changing the cannula's obturator (inner tube) from blunt to bladeless; (4) fixing the team, and (5) conducting regular docking training.

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Syphilis infections discovered late in pregnancy, as in this case, may not be treated long enough for delivery. The Japanese guidelines should be revised because they do not describe the mode of delivery for pregnant women infected with syphilis.

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Objective: Uterine tumours resembling ovarian sex cord tumours (UTROSCTs) are extremely rare. To date, most patients with UTROSCTs have undergone hysterectomy and had a benign clinical course. Fertility-preserving surgery should be considered because some patients with UTROSCTs are aged < 40 years.

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Article Synopsis
  • * Researchers developed organoid lines from SCNEC patients, focusing on one line that displayed mixed tumor characteristics, showing various differentiation in lab tests and animal models.
  • * Single-cell analysis showed distinct tumor cell clusters, linked to cancer markers and differentiation states; drug treatments affected marker expression, suggesting these mixed tumors share a common origin with flexible cancer cell identities.
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Background: The influence of the coronavirus disease 2019 (COVID-19) pandemic on the number of newly diagnosed gynecological cancers has not been extensively investigated in Japan. This study determined the impact of COVID-19 on the incidence of gynecological cancer.

Methods: Using the Japanese Society of Obstetricians and Gynecologic Oncology registry database, the distribution of the number of patients based on clinical staging or tumor-node-metastasis classifications before and during the COVID-19 pandemic was analyzed to compare the trends.

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