Thanks for the well wishes, mummummum. I am hoping it is something harmless too. At this point, and after some research it looks like it could be a perianal adenoma or a perianal adenocarcinoma. I'm hoping for the non-cancerous former. It's odd that he would get one given that he's been neutered since he was 7 months old. I never thought I'd ever say this but, I wish it was a hemorroid instead. Just hoping for some news that is not bad.
I'll see about getting a picture of him when things settle down a bit. Thank you again.