Received: 31 December 2019
Accepted: 27 February 2020
First Online: 4 March 2020
Ethics approval and consent to participate
: The patient received prior information before providing her written, informed consent in accordance with the Declaration of Helsinki. The article was approved by the ethics committee of Akita University Hospital (registration number 1970).
: Written, informed consent was obtained from the patient for publication of this article and any accompanying images. A copy of the written consent is available for review by the Editor of this journal.
: The authors declare that they have no competing interests.