Received: 11 June 2020
Accepted: 26 October 2020
First Online: 16 November 2020
Ethics approval and consent to participate
: Not applicable.
: Written, informed consent was obtained from the patient’s family for publication of this case report and all accompanying images.
: Yoshihiko Nishio has received honoraria for scientific lectures from Eli Lilly, Novo Nordisk Pharma, and Sanofi, and a scholarship donation from Novo Nordisk Pharma. Koshi Kusumoto, Nobuyuki Koriyama, Nami Kojima and Maki Ikeda have nothing to disclose.