Bump on head

[Theodore123]

First time poster!

My 3 year old male cat has been developing a bump on his head over the past several months. It seems to be hard and on his skull. Its centrally located behind his ears, more on the back part of his head. Doesn’t seem to hurt him if we push it but it seems to have gotten a little bigger.

We’ve taken him to two vets: first one barely looked at him and said it was a skin tag which it definitely is not because it is not on the skin, it’s on the skull. Second vet isn’t sure and is just “monitoring it”. We’ve taken two xrays over the past 3 months to see how it’s progressing and it seems to be getting bigger!

I wanted to see if anyone knew what this could be or had any similar experiences! Behavior is normal, he eats/drinks like usual and is very active/playful.

Please help, we are so worried about him

[Theodore123]

Here’s a pic of where the bump is.