hemangioendothelioma

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hemangioendothelioma

 [he-man″je-o-en″do-the″le-o´mah]
a rare, well-differentiated endothelial tumor with an appearance between that of a hemangioma and a sarcoma; sometimes considered to be identical to a hemangiosarcoma.

he·man·gi·o·en·do·the·li·o·ma

(hē-man'jē-ō-en'dō-thē'lē-ō'mă),
A neoplasm derived from blood vessels, characterized by numerous prominent endothelial cells that occur singly, in aggregates, and as the lining of congeries of vascular tubes or channels; in the elderly, may be malignant (angiosarcoma or hemangiosarcoma), but in children are benign and probably represent a growing stage of capillary hemangioma. Locally invasive but only rarely metastasize.
[hemangio- + endothelium + G. -oma, tumor]

hemangioendothelioma

/he·man·gio·en·do·the·lio·ma/ (-en″do-the″le-o´mah)
1. a true neoplasm of vascular origin, with proliferation of endothelial cells around the vascular lumen.

hemangioendothelioma

[hēman′jē·ō·en′dōthē′lē·ō′mə] pl. hemangioendotheliomas, hemangioendotheliomata
Etymology: Gk, haima + endon, inside, thele, nipple, oma, tumor
1 also called angioendothelioma. a tumor, consisting of endothelial cells, that grows around an artery or a vein. The benign form occurs in children and is usually cured by local excision. The tumor rarely becomes malignant.
2 malignant hemangioendothelioma. See also angiosarcoma.

he·man·gi·o·en·do·the·li·o·ma

(hē-man'jē-ō-en'dō-thē'lē-ō'mă)
A neoplasm derived from blood vessels, characterized by numerous prominent endothelial cells that occur singly, in aggregates, and as the lining of congeries of vascular tubes or channels; in the elderly, may be malignant (angiosarcoma or hemangiosarcoma), but in children are benign and probably represent a growing stage of capillary hemangioma.
Synonym(s): haemangioendothelioma.

he·man·gi·o·en·do·the·li·o·ma

(hē-man'jē-ō-en'dō-thē'lē-ō'mă)
A neoplasm derived from blood vessels, characterized by numerous prominent endothelial cells that occur singly, in aggregates, and as the lining of congeries of vascular tubes or channels; in the elderly, may be malignant (angiosarcoma or hemangiosarcoma), but in children are benign.
Synonym(s): haemangioendothelioma.

hemangioendothelioma (hē-man´jēōen´dōthē´lēō´mə),

n a malignant tumor formed by proliferation of endothelium of the capillary vessels.

hemangioendothelioma

a hemangioma in which endothelial cells are the predominant component.

malignant hemangioendothelioma
References in periodicals archive ?
Haemangioendothelioma is the term used to describe vascular neoplasms presenting with histological features and clinical behaviour intermediate between benign well-differentiated haemangiomas and anaplastic angiosarcomas.
Arsenic dose in patients with cutaneous carcinomata and hepatic haemangioendothelioma after environmental and occupational exposure.
CHANELLE was diagnosed with epithelioid haemangioendothelioma, usually only found in adults, in 2001.