Lump on spine

[CatG1481]

Can anyone help? I think that a bony lump has appeared at the end of my horse's back just as the back slopes into the tail. He is not lame or showing discomfort when tacked up/ridden. I will get the back person out but in the meantime I am really concerned as it looks odd! The vet would not commit himself as to what it might be without doing flexion tests, etc. What could it be?

 

[Penny Less]

Possibly bony growth due to arthritis in spine

 

[CatG1481]

It did seem to appear very suddenly, I think after he scraped his tail. He's 14.

 

[Jodies9154]

Some horse with kissing spines have small bony bumps above the dorsal processes of their spine, but not all. But I am not sure how many horses get kissing spines in that area of their spine etc.

I wouldn't panic about it, has the vet had a look?

 

[CatG1481]

Jason from RVC saw it but didn't like to comment on what it might be. He doesn't flinch when I press on it, it just looks weird!