This is a tumor of the blood vessels of the skin or subcutaneous tissue. Some are benign (hemangioma) but a few are malignant (hemangiosarcoma).
These are tumors of the blood vessels of internal organs. Some are benign (hemangioma) but most are malignant (hemangiosarcoma).
Cancer is a disorder of cell growth (uncontrolled cell division) that results in an abnormal mass of tissue (tumor) without a purpose. The growth exceeds that of normal tissue, is un-coordinated, and persists after the cause has gone. There are many different types of cancers.