White Blood Cell Disorders, Leukemia, and Lymphoma of Cats
In acute leukemia , many immature abnormal cells replace normal bone marrow cells, causing severe illness, anemia , and low numbers of platelets. The outlook for affected cats is generally poor, and treatment is relatively ineffective over the long term.
If your cat is anemic due to red blood cell destruction, this is commonly seen in cats from infectious causes. Both FeLV (Feline Leukemia Virus) and FIV (Feline Infectious Virus) can cause significant anemia as well as a blood parasite called Mycoplasma haemofelis (formerly known as Bartonella).

Feline Leukemia in Cats
Learn about the veterinary topic of Anemia in Cats . Find specific details on this topic and related topics from the Merck Vet Manual.
Anemia in Cats
Caused by a wide variety of underlying conditions, anemia in cats can range from mild to life-threatening. Dr. Tammy Powell explains.
If the bone marrow is not able to produce enough red blood cells to replace those that normally outlive their lifespan, a cat will develop a non-regenerative anemia , with a low reticulocyte count. One common cause of non-regenerative anemia in cats is chronic kidney disease.
More Context About Leukemia Anemia In Older Cats
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