Hemangiosarcomas are malignant tumors derived from the cells lining blood vessels (hem = blood, angio = vessel, sarcoma = tumor).  Hemangiosarcoma is a common cancer in dogs accounting for approximately 5% of cases. Since blood vessels run throughout the body, hemangiosarcomas can develop anywhere. However, the most common sites are the skin, spleen, liver, and … Continue reading Hemangiosarcoma in Dogs