Received: 22 August 2019
Accepted: 29 October 2019
First Online: 9 November 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the ethics committee <i>Nordwest and Central Switzerland</i> to report a TUGSE case with literature review to describe the dignity and differential diagnosis of this rare and hardly known entity (register number 2016/274). Informed consent was obtained from the patient for case description and photo material.
: We obtained the patient’s consent for publication.
: The authors declare that they have no competing interests.