Received: 27 January 2021
Accepted: 10 February 2021
First Online: 28 March 2021
Ethics approval and consent to participate
: This study has been approved by ethics committee at the University of Tokyo Hospital.
: Written informed consent was obtained from the patients for publication of this case report and any accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal.
: The authors have no conflict of interest to disclose.