pedicle

I've had some of my bucks damage their racks when growing in velvet. Most recover just fine by the next year and you'd never know. I'm talking about injury, enough, that maybe one side only grows to be about HALF as big as the undamaged side.   HOWEVER......one particular buck I have...

I have a tame yearling buck that has had a lump on his pedicle , it makes the pedicle appear almost twice the size as the other side. it is not getting any bigger it just appeared this size and has stayed this size but it has been a month, maybe more, since it appeared and its not going away...