He has to have a needle biopsy next week on an infected hard lump on his leg. We have to wait for the infection to clear first then they can test to see if the lump is a harmless histiocytoma or "something else". It's going to seem like a long wait for the antibiotics to work and then another long wait for the biospy results.
On a plus side, my very nervous boy allowed the vet to examine him without Rufus trying to imitate a hat by climbing on my head which he has tried in the past!!