College of Veterinary Medicine
Thee is some more good info here. Not wordy or too technical, I found it very straight forward and informative.
Ultimately it is your choice, and a lot will depend on how aggressive you want to be.
Speaking from what we see at work, people go either way in there choices.
After removing mast cell tumors our surgeons send out every one for histopath, this is one instance that the owners have no choice in that.
It is important for the surgeon, the owner and the pet to know if clean margins were achieved when removing the mass.
In one case I recall that clean margins were not achieved because of the location of the mass and stature of the dog. (Visla, pretty lean dog)
Her owners opted to have her referred to the local teaching Hospital for radiation and chemo.
That was around a year and a half ago, I just saw her the other day and she is doing great.
I don't recall that we have ever used Palladia at our clinic so I can't speak to that.
But here is an article with some helpful links from Perdue University. Pfizer introduces new chemotherapy drug, Palladia®
I think you should arm yourself with education at this point as to the disease and the drug so that you can make a well informed decision.
Removal of the tumors is the first line of defense, complete removal.
Many owners choose not to pursue radiation and chemotherapy, they are satisfied with removal.
I don't know that any of my rambling has helped you here, but the information in those websites should give you more insight.
This is what I would do, have the tumor removed, have the histopathology done, X-rays to check for metastasis and lymph node aspirates. Gather all that information and go from there.
As Lucky said, any drug that is considered should be discussed as to success rate, effect on her overall health and quality of life.