angiosarcoma /an·gio·sar·co·ma/ (an″je-o-sahr-ko´mah) a malignant neoplasm arising from vascular endothelial cells; the term may be used generally or may denote a subtype, such as hemangiosarcoma.
angiosarcoma
hepatic angiosarcoma a malignant liver tumor characterized by dilated sinusoids with hypertrophied or necrotic hepatocytes that leave vascular channels lined by malignant cells; it usually affects older men and has been linked to exposure to toxins.
an·gi·o·sar·co·ma ( n j - -sär-k m )n. A rare malignant tumor occurring most often in the breast and skin and believed to originate from the endothelial cells of blood vessels. |
angiosarcoma
[-särkō′mə]
a rare, malignant tumor consisting of endothelial and fibroblastic tissue that proliferates and eventually surrounds vascular channels. It begins in the lining of the blood vessels. The condition usually occurs in older persons. Angiosarcoma has been associated with exposure to many foreign materials in the body, such as steel, shrapnel, and plastic. This tumor tends to be aggressive and recurs locally as well as metastasizing. Also called hemangiosarcoma, malignant hemangioendothelioma. Compare angioma.
angiosarcoma
a malignant tumor of vascular tissue. Called also hemangiosarcoma, lymphangiosarcoma.
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