I got a video of a small buck passing by my Bushnell Trophy Cam the other day with a large mass growing on his shoulder. I figured I'd post this here, see what folks think it is, and see if anyone has seen something like this before?

My guess is that it's been shot with an arrow due to the shoulder location, but I've had someone else suggest cancer/tumor.

What do you think this is??

Here's the video of the little guy: http://www.youtube.com/watch?v=oeAependVhI