Hemangiosarcoma is a type of cancer that can affect multiple organs in dogs. Surgical excision of the affected region is the recommended treatment often with follow-up chemotherapy in many cases due to the high rate of disease spread associated with this disease. There are three forms of hemangiosarcoma that can affect dogs including: dermal, hypodermal, and visceral (organs). Dermal hemangiosarcoma is confined to the surface of the skin and has an approximately 30% metastatic rate or rate of disease spread. Subcutaneous/hypodermal hemangiosarcoma may occur anywhere on the body and is more invasive than the dermal form. Subcutaneous/hypodermal hemangiosarcoma tends to be locally invasive with a very high metastatic potential (high likelihood for disease spread). Greater than 60% of dogs with this form of hemangiosarcoma will develop metastasis and the average prognosis is often less than 6 months in patients with confirmed metastasis. Common sites for tumor spread include the spleen, abdominal lymph nodes, liver, omentum, mesentery, and lungs. Other sites that can be affected include the right atrium of the heart and central nervous system. If there is a cavitated mass involving the spleen, then we will often recommend performing a splenectomy (surgical removal of the spleen) with follow-up chemotherpy. Adriamycin chemotherapy consists of administering an intravenous chemotherapeutic (doxorubicin/adriamycin) once every 3 weeks for a maximum of 6 treatments and is recommended following surgical mass removal when possible to help delay the onset of metastatic tumor spread.
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Randhurst Animal Hospital
212 East Rand Rd., Mt. Prospect, IL 60056
Veterinarians serving Mt Prospect, Des Plaines, Arlington Heights, Northbrook, Glenview, Morton Grove, Rolling Meadows, Wheeling, Prospect Heights, Palatine and surrounding areas
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