Dr S said that the lump is a piece of bone, but not from Loki’s wrist. No idea where it has come from. It isn’t spongy, nor does it have the ‘moth eaten’ look of bone cancer. It’s just a piece of bone.
That being said, the vet wants to remove it, and send it off for testing.
So, with luck, we will end up bringing a grump, annoyed with us cat, home this afternoon.