What is Hemangiosarcoma?

Hemangiosarcoma of the spleen, or spleen cancer in dogs, is a cancer that is diagnosed in many canines every year. It is a cancer made up of the cells that line blood vessels, and therefore can be found in any part of the body. However, the most common sites include the spleen, liver and right auricle of the heart. Approximately 2/3rds of masses in the spleen are malignant and of those, 2/3rds are diagnosed as hemangiosarcomas. Splenic hemangiosarcoma is most often diagnosed in older dogs, with German Shepherds, Labrador Retrievers and Golden Retrievers being the most commonly affected breeds. Splenic
Read More

Symptoms of Cancer in Dogs & Cats

Common Signs of Cancer in Pets Treating cancer in pets is a large part of what we do here at AVIM&O. An estimated 4 million dogs and cats will develop cancer each year. As dogs get older, their risk of cancer increases. Almost half of dogs over the age of 10 will develop cancer, while there is less information regarding the cancer rate in cats. Still, we do know that cancer is the leading cause of death in 47% of dogs and 32% of cats. A Morris Animal Foundation study found that 41% of animal owners feel that cancer is
Read More

Feline Mammary Gland Adenocarcinoma

Feline mammary gland tumors are the 3rd most common feline tumor and are most commonly diagnosed in middle-aged to older cats.  Incidence of mammary tumors is dependent on when cats are spayed. Cats who are spayed prior to 6 months of age have a 91% reduced risk of developing mammary cancer. Spaying after 2 years does not decrease the risk of developing mammary tumors. Unfortunately, the majority (80-90%) of mammary gland tumors in cats are malignant, and 80-90% will metastasize (spread to other areas of the body) during the course of disease. The most common sites of metastasis include the
Read More