Canine lymphoma, similar to non-Hodgkin’s lymphoma in humans, accounts for roughly 7 to 14 percent of all canine cancers and is one of the five most common for dogs. There are more than 30 described types and they can vary significantly in their behavior.
What is it?
A lymphoma arises from white blood cells called lymphocytes, which help the immune system fight off infections. Consequently, most lymphomas are found in organs that are part of that system.
While lymphoma can affect almost any of those organs, it’s most often seen in the lymph nodes under the jaw, in front of the shoulders or behind the stifle (knee) before spreading to another organ, such as the spleen, liver or bone marrow. Some lymphomas progress rapidly and require aggressive treatment, while others move very slowly and can be managed as a chronic disease. Like most canine cancers, lymphoma has no known cause.