6 years ago my cat Goku had VAS (vaccine associated sarcoma), a vaccine related cancer that strikes sensitive cats and ferrets (dogs have far less this problem).
Sarcoma is a cancer that grow fast (one mm at day) and my cat's cancer was 1 cm of diameter with 2 roots. Luckily the longest one grew parallel to the spine instead of perpendicular. When she had surgery, she had 80% of possibility of recurrence. In this case, the 20% of possibility(no recurrence) was the one that happened.
In total only 2% of VAS cat survive. My Goku is part of those 2%
I think is time to celebrate now
Right now, Goku is a senior (14 years and half). Is year I try to put her on diet, and finally I was able to give her the right amount of food (I learned by feeding my brother's cats, they're pedigree cats so they need extra care), and she lost some weight. Now is not a 'fatball' anymore, is just a little chubby. This alone has solved a recent intestinal problem she had due to obesity. She also sleeps better now.
As elder, she walks stiffly, but the still had all her teeth and she is still able to eat solid food without problem (also, she still bite me).
Her fur is still really thick, even if she loses a lot of fur, more than when she was young.