That is a really wierd looking tumor. Did you ever get an answer on what that thing is? Did you ever talk to someone with the fish and game department and show them the picture. I would be very interested in finding out what that is. When you first mentioned it I thought that you were describing a fibroma. I am not sure that is what that is now. It's possible but I have never seen a deer fibroma hand down like that. That is very odd. What state was this picture taken in? You said that the deer did not seem in pain or bothered by the tumor right?