This is one of many syndromes that the North American Whitetail can acquire. This indeed is some type of wart or known as "deer warts' it is known as a form of Bang's syndrome or Bang's disease. basically it is a conglomerate of many fibrous tumors. This is not entirely uncommon in the whitetail deer species. But cases this bad are less commonly seen.And is definately not confined to the northern whitetail herd. So topdawg is wrong once again.