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Article History

Received: 21 March 2019

Accepted: 16 May 2019

First Online: 23 May 2019

Ethics approval and consent to participate

: This study was conducted in accordance with the ethical committee of Chiba University School of Medicine (approval number 1673). All studies were performed according to the guidelines of the Declaration of Helsinki.

: Written informed consent was obtained from the patient and his family for publication of this case report and the accompanying images. A copy of the written consent is available for review by the Editor-in-Chief.

: The authors declare that they have no competing interest.

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