Ethical Statement:
The case presented here was seen in our institute (University Health
Network, University of Toronto) in consultation with another
institute where the patient had originally been seen and treated. We
believe that it would potentially be difficult to find the appropriate
clinical team in the outside hospital to obtain consent from the
patient. We completely understand that having consent from all the
patients who are participating in any sort of studies is critical;
however, in this case, we only present a few histological and
immunological images with a brief description of the pathology with no
reference to any information from the patient from whom the pathology
specimen was obtained. This report, nonetheless, has been performed
according to the declaration of Helsinki.