Transvaginal ultrasound features of the residual cervix in pregnancy after radical trachelectomy

  • Yoshifumi KasugaEmail author
  • Kei Miyakoshi
  • Mamoru Tanaka
Image–Obstetrics & Gynecology



The authors are grateful to all medical staff at Keio University Hospital for their excellent patient care. We would like to thank Editage ("") for English editing.

Compliance with ethical standards

Conflict of interest

Yoshifumi Kasuga, Kei Miyakoshi, and Mamoru Tanaka declare that they have no conflicts of interest.

Ethical approval

All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions.

Informed consent

Informed consent was obtained from the patient for being included in the study.


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Copyright information

© The Japan Society of Ultrasonics in Medicine 2020

Authors and Affiliations

  1. 1.Department of Obstetrics and GynecologyKeio University School of MedicineTokyoJapan

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