Back to Blog

Chronic Lymphocytic Leukemia (CLL) in Dogs

Jul 26, 2018

Chronic Lymphocytic leukemia (CLL) is a condition in which mature (i.e., "normal"-looking) lymphocytes (a type of white blood cell) accumulate in the body (including in the bone marrow and spleen). This results in elevated circulating lymphocyte counts on CBC blood tests. CLL typically occurs in middle age to older dogs and is often found "accidentally" when blood work is being performed for other reasons. CLL usually progresses slowly and patients can typically be medically managed and live well for years.