Conflict of interest

Takashi Shimokawa, Ayumi Okuyama, Ruiko Miura, Tatsuya Izdebski, Minako Goto, Kohei Seo, and Kiyotake Ichizuka declare that they have no conflicts of interest.

Ethical approval

Not applicable.

Informed consent

Written informed consent was obtained from the patient for the publication of this case report and the accompanying images.