If a person inherits genetic cancer are they both human and the virus?

I have an illness called Multiple Endocrine Neoplasia 2A. This was discovered after I developed medullary thyroid cancer. My endocrinologist suspected that I had this illness which can be a part of the MEN2A. From what I understand, it is an inherited illness unless it is somehow spontaneous. It is believed that I inherited it from my father, but he is dead and has no remaining family other than my mother and I. My question is if I inherited this illness that makes a cancer, am I both human and the virus itself. I inherited what makes the virus just the same as I inherited what makes me human. I asked the researcher and he said no one is exactly sure how this works. I am hoping there might be some genetic experts on here who could explain this to me. I am a Ret Protooncogene mutation C634Y in Exon 11 if that is any help.