Received: 29 May 2020
Accepted: 13 January 2021
First Online: 2 February 2021
Ethics approval and consent to participate
: Ethics approval not applicable. All patients provided informed consent prior to submission.
: Written informed consent was obtained from each patient to be included this case series and all the cases and images were provided in a de-identified manner. A copy of the written consent is available for review by the editor of this journal.
: S.D. received honoraria for consulting services from Novartis. J.H. and L.T. received honoraria for consulting services from Biogen. K.R. received honoraria for consulting services from Novartis, Biogen, EMD Serono, Genzyme, TG Therapeutics.