Received: 16 February 2021
Accepted: 29 March 2021
First Online: 7 April 2021
: Not applicable because a case report is not regarded as a study according to the “Ethical Guidelines for Medical and Health Research Involving Human Subjects” of the Japanese Ministry of Health, Labour and Welfare.
: Written informed consent was obtained from the patient for publication of this case report, including medical data and images.
: The authors declare that they have no competing interests.