Received: 9 July 2019
Accepted: 16 October 2019
First Online: 8 November 2019
Ethics approval and consent to participate
: The study protocol and access to patient records were approved by the Institutional Review Board of Seoul National University (S-D20170026).
: Written informed consent was obtained from the patient for publication of this case report and accompanying images.
: The authors declare that they have no competing interests.