Most dogs with a tumor will see the cancer spread to the lungs in 1 to 2 years. (dog-health-guide.org)
The later often spread to the lungs, lymph nodes and other organs. (dog-health-guide.org)
In addition to surgery, your veterinarian may recommend chemotherapy treatment to make sure that malignant cells (cancer cells that spread quickly) do not spread to the lungs. (dog-health-guide.org)