Canine hemangiosarcoma is a malignant tumor that develops in any tissue with blood vessels. It is an aggressive cancer that is highly metastatic. Canine hemangiosarcoma tends to spread to the liver, lungs, heart and spleen.
This type of tumor can form in any part of the body that has blood vessels. The primary locations of the tumor are:
- spleen (50-65% of all canine hemangiosarcoma)
- heart (3-25%)
- skin (13-17%)
- liver (5-6%)
Hemangiosarcoma accounts for more than 50% of spleen cancer in dogs. It is also the most common canine heart tumor.
Hemangiosarcoma of the spleen in a dog. The tumor is on the left, and normal spleen is on the right.
(By Joel Mills (Own work) [CC-BY-SA-3.0 (www.creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons)
Predisposition of dog breeds
German Shepherds, Golden Retrievers, Labrador Retrievers, Pointers, Boxers, English Setters, Great Danes, Poodles and Siberian Huskies.
Canine hemangiosarcoma usually affects dogs over the age of 8 years old.
Canine Hemangiosarcoma Symptoms
By the time canine hemangiosarcoma symptoms are evident, the tumor may have ruptured or is likely to have spread to other parts of the body. Some of the symptoms can be life threatening, so it is crucial to know what they are and seek the vet’s attention as soon as possible.