Received: 4 March 2020
Accepted: 2 June 2020
First Online: 8 June 2020
Ethics approval and consent to participate
: This case study was approved by the Institutional Ethics Committee of Xiangya Hospital Central South University, Hunan Province, China.
: Written informed consent was obtained from the patient for the publication of this case report and any accompanying images. A copy of the consent form is available for review by the Editor of Diagnostic Pathology.
: The authors declare that they have no competing interests.