Conflict of interest

Akihiko Kida, Jun Asai, Tatsuya Yamashita, Takeshi Urabe, and Taro Yamashita declare that they have no conflicts of interest.

Ethical approval

This case was treated in accordance with the ethical standards described in the latest revision of the Declaration of Helsinki.

Patient consent for participation and publication

Informed consent for patient participation and publication was received from the patient.

Permission to reproduce material from other sources

None to report.

Clinical trial register and the clinical registration number

None to report.