
Hello! My dog had a similar growth on his head. It was about the size of a pea and I was not happy about it. Vet said it was a cyst but I thought it was getting bigger. Upshot is, I asked the vet to remove it, she did and they tested it. It was in fact just a cyst (and I am a worrier!!). However, I feel a whole lot happier and my insurance policy paid for the treatment. If in doubt, get it removed - and for the record, if I had to pay for the removal it was £166 total. Not too much really even if you aren't insured. Hope this is helpful :)
CG