Q. I have a female cat who is about 10 yrs old and about 3 days ago I noticed the back of her head was swollen an seems to be getting bigger

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A. This unfortunately sounds like a mass. I would recommend you have this mass tested at your vet to tell if this is something benign or something we should worry about, such as cancer. There is no way to tell just by looking at it and the vet will need to draw of some cells through a fine-needle aspirate and look at the cells to give you more information about what this could be and what the next best steps are towards treatment, if any.

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