T-Zone lymphoma like this just needs to be monitored. Until the tumors really start to grow and her blood markers reach a certain point, all that needs to happen is a monthly exam and blood work. If all stays the same after six months, the visits are spaced out.
If the cancer becomes more active, the next step is a one year course of at-home oral chemotherapy. This form of chemo is very well tolerated and would have minimal side effects. We would go back to monthly visits to monitor her blood work.
This kind of cancer is very common is Golden Retrievers and Shitz-shus around ten years old. Often, these dogs end up passing of something other than the cancer as they age.
The lesson to be learned from Teddy, I guess, is to keep your dog healthy so they can fight these conditions when they arise. Also, don't freak out at the first diagnosis. Wait until all the tests and examinations are done. We've had about ten sleepless nights, worrying because we didn't have all the facts. Now that we know more, we feel a lot better. The diagnosis was fairly expensive, but at least we know what we are dealing with. The vet also confirmed that we are doing everything right.
Please continue to keep pulling for my girl, and thanks for the support so far. It's made us all feel a lot better!