Could it be a sarcoid? Hope Gallop can give some input too if she's out there?

I'm with Pony Girl.. I have never seen/ or felt this on any geldings in my days so far. I hope someone on here can ease your mind and give you the information you need, someone who has seen this type of thing before. I wish I could be of more help to you. Good Luck! I hope he's okay.. and everything works out for you.(: