When this occurs, additional treatment is needed, otherwise, there is the chance that the tumor might return. Options include another surgery or radiation therapy. In this case, radiation therapy is a good alternative. Radiation therapy is very effective at preventing local recurrence of these tumors. It is important to remember that surgery and radiation therapy are local treatments and have no effect on the spread of the tumor.
Chemotherapy can be beneficial in treating metastasis since it is a systemic treatment.
We will prescribe prednisone if we either find metastasis or if there is a high likelihood of metastasis. Most dogs are kept on prednisone for a 6-month period. If there is no evidence of metastasis or recurrence by that time, the prednisone is discontinued. There are some situations where we will recommend prednisone for a longer period of time. The most common side effects of prednisone include increased thirst, urination, appetite and panting.