Received: 29 November 2017
Accepted: 21 March 2018
First Online: 2 April 2018
Ethics approval and consent to participate
: The study was approved by the institutional ethics board of Yamanashi Central Hospital.
: Written informed consent was obtained from the patient for publication of this case presentation and 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.
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