Received: 25 July 2019
Accepted: 15 November 2019
First Online: 29 November 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of the Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan (2018–0137).
: Written informed consent was obtained from the patient‘s next of kin 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 declare that they have no competing interests.