All Stories

  1. Comparison of the efficacy and safety of five-day methotrexate versus pulse actinomycin D for low-risk gestational trophoblastic neoplasia: a single-center historical cohort study☆

    Article • International Journal of Gynecological Cancer, December 2025, Elsevier

    Hirokazu Usui

  2. Response to the Correspondence by Xu, et al. regarding "Comparison of the efficacy and safety of five-day methotrexate versus pulse actinomycin D for low-risk gestational trophoblastic neoplasia"

    Article • International Journal of Gynecological Cancer, December 2025, Elsevier

    Hirokazu Usui

  3. Response to the Correspondence by Fang Q. regarding "Comparison of the efficacy and safety of five-day methotrexate versus pulse actinomycin D for low-risk gestational trophoblastic neoplasia"

    Article • International Journal of Gynecological Cancer, December 2025, Elsevier

    Hirokazu Usui

  4. Evaluation of the usefulness of sentinel lymph node mapping using indocyanine green in patients with cervical and endometrial cancers: A single‐center prospective exploratory study

    Article • Journal of Obstetrics and Gynaecology Research, February 2025, Wiley

    Hirokazu Usui

  5. Resolution of pelvic postoperative spindle cell nodule with sarcomatous onset after 9 years of follow‐up

    Article • Journal of Obstetrics and Gynaecology Research, February 2025, Wiley

    Hirokazu Usui

  6. A phantom human chorionic gonadotropin in the case of molar pregnancy

    Article • Oxford Medical Case Reports, May 2024, Oxford University Press (OUP)

    Hirokazu Usui

  7. Therapy‐related myeloid neoplasms after treatment for ovarian cancer: A retrospective single‐center case series

    Article • Journal of Obstetrics and Gynaecology Research, April 2024, Wiley

    Hirokazu Usui

  8. Single‐nucleotide polymorphism array and fluorescence in situ hybridization analysis to decode the cytogenetic profile of atypical partial hydatidiform moles diagnosed by short tandem repeat polymorphism analysis

    Article • Genes Chromosomes and Cancer, February 2024, Wiley

    Hirokazu Usui

  9. Evaluation of Combined p57KIP2 Immunohistochemistry and Fluorescent in situ Hybridization Analysis for Hydatidiform Moles Compared with Genotyping Diagnosis

    Article • International Journal of Gynecological Pathology, January 2024, Wolters Kluwer Health

    Hirokazu Usui

  10. Letter to the editor on Donzel M et al. “Androgenetic/biparental mosaicism in a diploid mole-like conceptus: report of a case with triple paternal contribution”

    Article • Virchows Archiv, December 2023, Springer Science + Business Media

    Hirokazu Usui

  11. Total human chorionic gonadotropin is a more suitable diagnostic marker of gestational trophoblastic diseases than the free β-subunit of human chorionic gonadotropin

    Article • Practical Laboratory Medicine, November 2023, Elsevier

    Hirokazu Usui

  12. A Phase Ib Study of Durvalumab (MEDI4736) in Combination with Carbon-Ion Radiotherapy and Weekly Cisplatin for Patients with Locally Advanced Cervical Cancer (DECISION Study): The Early Safety and Efficacy Results

    Article • International Journal of Molecular Sciences, June 2023, MDPI AG

    Hirokazu Usui

  13. Prognosis prediction of uterine cervical cancer using changes in the histogram and texture features of apparent diffusion coefficient during definitive chemoradiotherapy

    Article • PLOS One, March 2023, PLOS

    Hirokazu Usui

  14. Suppressor‐type TERT mutations associated with recurrence in ovarian clear cell carcinoma

    Article • Genes Chromosomes and Cancer, March 2023, Wiley

    Hirokazu Usui

  15. Delayed postrenal failure due to progression of asymptomatic hydronephrosis following hysterectomy

    Article • Journal of Obstetrics and Gynaecology Research, February 2023, Wiley

    Hirokazu Usui

  16. Auxiliary and experimental diagnostic techniques for hydatidiform moles

    Article • Journal of Obstetrics and Gynaecology Research, September 2022, Wiley

    Hirokazu Usui

  17. Short tandem repeat polymorphism analysis for primary peritoneal choriocarcinoma: A case report and literature review

    Article • Journal of Obstetrics and Gynaecology Research, July 2022, Wiley

    Hirokazu Usui

  18. Discrepancies in pathological diagnosis of endometrial stromal sarcoma: a multi-institutional retrospective study from the Japanese clinical oncology group

    Article • Human Pathology, June 2022, Elsevier

    Hirokazu Usui

  19. The effect of steep head-down tilt on respiratory status in endometrial cancer patients with obesity during robot-assisted hysterectomy

    Article • Gynecologic Oncology Reports, June 2022, Elsevier

    Hirokazu Usui

  20. Phase Ib study of durvalumab (MEDI4736) in combination with carbon-ion radiotherapy and weekly cisplatin for patients with locally advanced cervical cancer (DECISION study): study protocol for a prospective open-label single-arm study

    Article • BMJ Open, March 2022, BMJ

    Hirokazu Usui

  21. High prevalence of pulmonary embolism prior to cancer therapies in patients with ovarian and endometrial cancers detected by contrast‐enhanced CT using D‐dimer as an index

    Article • Journal of Surgical Oncology, April 2021, Wiley

    Hirokazu Usui

  22. Spermatogonium-Derived Complete Hydatidiform Mole

    Article • The New England Journal of Medicine and Surgery and the Collateral Branches of Science, March 2021, New England Journal of Medicine (NEJM/MMS)

    Hirokazu Usui

  23. Surgical margin status and recurrence pattern in invasive vulvar Paget’s disease: A Japanese Gynecologic Oncology Group study

    Article • Gynecologic Oncology, March 2021, Elsevier

    Hirokazu Usui

  24. Placenta accreta after remission of low-risk gestational trophoblastic neoplasia: A case report

    Article • Placenta, January 2021, Elsevier

    Hirokazu Usui

  25. Parental contribution to trisomy in heterozygous androgenetic complete moles

    Article • Scientific Reports, October 2020, Springer Science + Business Media

    Hirokazu Usui

  26. Androgenetic Complete Hydatidiform Moles With p57KIP2-Positive Immunostaining

    Article • American Journal of Clinical Pathology, July 2020, Oxford University Press (OUP)

    Hirokazu Usui

  27. ABO blood type compatibility is not a risk factor for gestational trophoblastic neoplasia development from androgenetic complete hydatidiform moles

    Article • American Journal of Reproductive Immunology, April 2020, Wiley

    Hirokazu Usui

  28. Second Uterine Curettage and the Number of Chemotherapy Courses in Postmolar Gestational Trophoblastic Neoplasia

    Article • Obstetrics and Gynecology, September 2019, Wolters Kluwer Health

    Hirokazu Usui

  29. Comparison between vacuum aspiration and forceps plus blunt curettage for the evacuation of complete hydatidiform moles

    Article • Taiwanese Journal of Obstetrics and Gynecology, September 2019, Elsevier

    Hirokazu Usui

  30. IFPA meeting 2018 workshop report II: Abnormally invasive placenta; inflammation and infection; preeclampsia; gestational trophoblastic disease and drug delivery

    Article • Placenta, September 2019, Elsevier

    Hirokazu Usui, Gendie Lash, Hiroshi Fujiwara

  31. Genome-wide single nucleotide polymorphism array analysis unveils the origin of heterozygous androgenetic complete moles

    Article • Scientific Reports, August 2019, Springer Science + Business Media

    Hirokazu Usui

  32. Radiation Therapy for Extrapelvic Lymph Node Recurrence After Curative Treatment for Cervical Cancer

    Article • Anticancer Research, February 2019, International Institute of Anticancer Research

    Hirokazu Usui

  33. Long-term outcomes of progestin plus metformin as a fertility-sparing treatment for atypical endometrial hyperplasia and endometrial cancer patients

    Article • Journal of Gynecologic Oncology, January 2019, Asian Society of Gynecologic Oncology; Korean Society of Gynecologic Oncology and Colposcopy (KAMJE)

    Hirokazu Usui

  34. Variant Prolactin Receptor in Agalactia and Hyperprolactinemia

    Article • The New England Journal of Medicine and Surgery and the Collateral Branches of Science, December 2018, New England Journal of Medicine (NEJM/MMS)

    Hirokazu Usui

  35. Response to Letter to ‘Removal of retained products of conception showing marked vascularity without uterine artery embolization: Two case reports’

    Article • Journal of Obstetrics and Gynaecology Research, November 2018, Wiley

    Hirokazu Usui

  36. Gestational Trophoblastic Neoplasia From Genetically Confirmed Hydatidiform Moles: Prospective Observational Cohort Study

    Article • International Journal of Gynecological Cancer, November 2018, BMJ

    Hirokazu Usui

  37. Bacterial-Culture-Negative Subclinical Intra-Amniotic Infection Can Be Detected by Bacterial 16S Ribosomal-DNA–Amplifying Polymerase Chain Reaction

    Article • Japanese Journal of Infectious Diseases, July 2018, Editorial Committee of Japanese Journal of Infectious Diseases, National Institute of Infectious Dis

    Hirokazu Usui

  38. Removal of retained products of conception showing marked vascularity without uterine artery embolization: Two case reports

    Article • Journal of Obstetrics and Gynaecology Research, June 2018, Wiley

    Hirokazu Usui

  39. Elucidation of the developmental mechanism of ovarian mature cystic teratomas using B allele-frequency plots of single nucleotide polymorphism array data

    Article • Genes Chromosomes and Cancer, June 2018, Wiley

    Hirokazu Usui

  40. Treatment results of the second-line chemotherapy regimen for patients with low-risk gestational trophoblastic neoplasia treated with 5-day methotrexate and 5-day etoposide

    Article • Journal of Gynecologic Oncology, January 2018, Asian Society of Gynecologic Oncology; Korean Society of Gynecologic Oncology and Colposcopy (KAMJE)

    Hirokazu Usui

  41. ADJUVANT CHEMOTHERAPY MAY NOT BE NECESSARY FOR LOW-INTERMEDIATE RISK ENDOMETRIAL CANCER

    Article • October 2017, Morressier

    Hirokazu Usui

  42. Complete hydatidiform moles are composed of paternal chromosomes and maternal mitochondria

    Article • Mitochondrial DNA Part A, October 2017, Taylor & Francis

    Hirokazu Usui

  43. The Efficacy of Palonosetron Plus Dexamethasone in Preventing Chemoradiotherapy-induced Nausea and Emesis in Patients Receiving Daily Low-dose Cisplatin-based Concurrent Chemoradiotherapy for Uterine Cervical Cancer

    Article • American Journal of Clinical Oncology, April 2017, Wolters Kluwer Health

    Hirokazu Usui

  44. Presence of the methylenetetrahydrofolate reductase gene polymorphism MTHFR C677T in molar tissue but not maternal blood predicts failure of methotrexate treatment for low-risk gestational trophoblastic neoplasia

    Article • European Journal of Pharmacology, January 2017, Elsevier

    Hirokazu Usui

  45. A case report and review of the literature: 3 infants of umbilical cord ulcerations associated with polyhydramnios

    Article • Placenta, October 2016, Elsevier

    Hirokazu Usui

  46. Postoperative Radiation Therapy for Cervical Cancer: Three-Dimensional Conformal Radiation Therapy (3DCRT) Versus Intensity Modulated Radiation Therapy (IMRT)

    Article • International Journal of Radiation Oncology*Biology*Physics, October 2016, Elsevier

    Hirokazu Usui

  47. Ovarian nongestational choriocarcinoma and associated adenocarcinoma with the same germ cell origin determined by a molecular genetic approach: A case report

    Article • Pathology International, August 2016, Wiley

    Hirokazu Usui

  48. Local injection of diluent vasopressin followed by suction curettage as initial treatment of cervical ectopic pregnancy

    Article • June 2016, Morressier

    Hirokazu Usui

  49. Efficacy of palonosetron plus aprepitant in preventing chemoradiotherapy-induced nausea and emesis in patients receiving daily low-dose cisplatin-based concurrent chemoradiotherapy for uterine cervical cancer: a phase II study

    Article • Supportive Care in Cancer, June 2016, Springer Science + Business Media

    Hirokazu Usui

  50. Mature cystic teratomas arise from meiotic oocytes, but not from pre-meiotic oogonia

    Article • Genes Chromosomes and Cancer, January 2016, Wiley

    Hirokazu Usui

  51. Comparison of 5-day MTX and 5-day ETP treatment results and early predictors of drug resistance to 5-day MTX in patients with post-molar low-risk gestational trophoblastic neoplasia

    Article • Gynecologic Oncology, December 2015, Elsevier

    Hirokazu Usui

  52. Early pregnancy-associated cardiomyopathy complicated with a complete hydatidiform mole coexistent with a live fetus and exacerbated by induced abortion

    Article • International Journal of Cardiology, November 2015, Elsevier

    Hirokazu Usui

  53. Three point mutations of promoter I.1 of marmoset aromatase gives rise of human type exonI.1

    Article • Placenta, October 2015, Elsevier

    Hirokazu Usui

  54. Tubal pregnancy associated with additional conception in a contralateral tube

    Article • Journal of Obstetrics and Gynaecology Research, June 2015, Wiley

    Hirokazu Usui

  55. The Clinical Characteristics and Early Detection of Postpartum Choriocarcinoma

    Article • International Journal of Gynecological Cancer, June 2015, BMJ

    Hirokazu Usui

  56. Daily Low-Dose Cisplatin-Based Concurrent Chemoradiotherapy for the Treatment of Cervical Cancer in Patients 70 Years or Older

    Article • International Journal of Gynecological Cancer, June 2015, BMJ

    Hirokazu Usui

  57. The tumor-suppressive microRNA-1/133a cluster targets PDE7A and inhibits cancer cell migration and invasion in endometrial cancer

    Article • International Journal of Oncology, May 2015, Spandidos Publications

    Hirokazu Usui

  58. EARLY ONSET PERIPARTUM CARDIOMYOPATHY FOLLOWING DILATION AND EVACUATION FOR COMPLETE HYDATIDIFORM MOLE COEXISTENT WITH LIVE FETUS

    Article • Journal of the American College of Cardiology, March 2015, Elsevier

    Hirokazu Usui

  59. Regulation of expression of p57KIP2 gene in extravillous trophoblast cells

    Article • Placenta, October 2014, Elsevier

    Hirokazu Usui

  60. A phase II study of medroxyprogesterone acetate plus metformin as fertility-sparing treatment for atypical endometrial hyperplasia and endometrial cancer.

    Article • Journal of Clinical Oncology, May 2014, American Society of Clinical Oncology (ASCO)

    Hirokazu Usui

  61. Tumor-suppressive microRNA-29a inhibits cancer cell migration and invasion via targeting HSP47 in cervical squamous cell carcinoma

    Article • International Journal of Oncology, October 2013, Spandidos Publications

    Hirokazu Usui

  62. A case of vanishing partial hydatidiform mole coexistent with a live fetus (HMCF)

    Article • Placenta, October 2013, Elsevier

    Hirokazu Usui

  63. Daily Low-Dose Cisplatin-Based Concurrent Chemoradiotherapy in Patients With Uterine Cervical Cancer With Emphasis on Elderly Patients

    Article • International Journal of Gynecological Cancer, October 2013, BMJ

    Hirokazu Usui

  64. Outcomes of Concurrent Chemoradiation Therapy for Neuroendocrine Carcinoma of Cervix

    Article • International Journal of Radiation Oncology*Biology*Physics, October 2013, Elsevier

    Hirokazu Usui

  65. Revaluation of cytogenetic diagnosis of partial hydatidiform moles by short tandem repeats polymorphism analysis

    Article • Placenta, October 2013, Elsevier

    Hirokazu Usui

  66. Numerous psammoma bodies in cervical cytology of high‐grade endocervical adenocarcinoma

    Article • Cytopathology, July 2013, Wiley

    Hirokazu Usui

  67. IFPA Meeting 2012 Workshop Report III: Trophoblast deportation, gestational trophoblastic disease, placental insufficiency and fetal growth restriction, trophoblast over-invasion and accreta-related pathologies, placental thrombosis and fibrinolysis

    Article • Placenta, March 2013, Elsevier

    Hirokazu Usui, Gendie Lash

  68. Expression of Angiotensin II Receptor-like 1 in the Placentas of Pregnancy-induced Hypertension

    Article • International Journal of Gynecological Pathology, May 2012, Wolters Kluwer Health

    Hirokazu Usui

  69. The effect of metformin on cell proliferation in patients with endometrial cancer.

    Article • Journal of Clinical Oncology, May 2011, American Society of Clinical Oncology (ASCO)

    Hirokazu Usui

  70. Molecular Distinction of Consecutive Molar Pregnancies

    Article • Obstetrics and Gynecology, February 2011, Wolters Kluwer Health

    Hirokazu Usui

  71. The risk of post-molar gestational trophoblastic neoplasia is higher in heterozygous than in homozygous complete hydatidiform moles

    Article • Human Reproduction, March 2010, Oxford University Press (OUP)

    Hirokazu Usui

  72. High Aromatase Expression in Uterine Leiomyoma Tissues of African-American Women

    Article • The Journal of Clinical Endocrinology & Metabolism, May 2009, Endocrine Society

    Hirokazu Usui

  73. Serum YKL-40 as a marker for cervical adenocarcinoma

    Article • Annals of Oncology, January 2009, Elsevier

    Hirokazu Usui

  74. Concurrent daily cisplatin and extended-field radiation therapy for carcinoma of the cervix

    Article • International Journal of Gynecological Cancer, January 2008, BMJ

    Hirokazu Usui

  75. Up-regulation of CXC chemokines and their receptors: implications for proinflammatory microenvironments of ovarian carcinomas and endometriosis

    Article • Human Pathology, November 2007, Elsevier

    Hirokazu Usui

  76. Serum YKL-40 levels are usuful diagnostic tumor markers for adenocarcinoma of the uterine cervix

    Article • Journal of Clinical Oncology, June 2007, American Society of Clinical Oncology (ASCO)

    Hirokazu Usui