Hi Mauvaischien.
That's good news if the tuor/cander is in an operable place for your scotttie. What's his name? It is risky having surgery, no doubt. However, I've got a 13 year old scottie Darnley who was operated on for a suspicious tumor back in 2008 near his prostate gland when he was 9/10 years old and then more recently for some benign growths early this year near his mouth! Both times he was put under anaesthetic and he healed and survived. He's slowed down somewhat since he was neutered at the time of the first op, but he remains a really tough, compact, dog. They don't call scotties "die-hards" for nothing. What did the vet think of the chances of your scottie surviving the surgery? Sometimes bladder tumors can be difficult to remove. Perhaps waiting a bit and see if the tumor stabilizes/stops growing would be better before surgery.
Other sad news, though. I've got a younger 6 1/2 year old female scottie, Megan's Dee, who was just tenatively diagnosed with TCC through an ultrasound and cystocentesis. Unlike with your dog, though, my dog's tumor is not apparently in an operable place -- it is too close to the "narrow mouth" end of her bladder where the sphincters connect to the kidneys. Operating might spread the tumor and might imperil kidney function. The vet is giving her about two years of life left, max.
The vet will have complete another urinalysis next week to test for the TCC. We're about to put her on prioxicam too, though from what I've been reading it is a tough anti-inflammatory drug that's hard on the stomach. Meanwhile, all I can do is read up on this horrible disease and figure out how we can keep her as healthy and comfortable as possible. I have switched her over to the Royal Canin S/O diet for dogs with urinary problems now. I'm looking into giving her more fresh homemade foods, some of it raw, if I can, and hope for the best.
She had been having incontinence and some blood in her urine for about 4 months off and on. The vet initially put her on antibiotics, 2 rounds of them (amoxicillin, and then amoxicillin & cipro), and they offered her some relief, though she continued to suffer incontinence and some discomfort.
Also, you can read up more here:
http://www.vet.purdue.edu/pcop/files/docs/CanineUrinaryBladd
Let me know how you and your dog are doing! Cathy