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]

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.
References in periodicals archive ?
Pseudomyogenic hemangioendothelioma affects people at many ages, with a mean age in the third or early forth decades, (1,3,5) and has a striking male predominance.
Keratins MNF116 and CAM5.2, epithelial membrane antigen (EMA), CD31, and CD34 were also negative, as was CAMTA1, a recently described antibody expressed in epithelioid hemangioendothelioma (Table 1 and Fig.
The suffix "oma" is typically associated with tumors, and is appropriately reserved for the vascular tumors such as hemangioma and hemangioendothelioma. A summary of the modifications in terminology for some of the most common lesions is presented in Table 4.
Categorization of benign and malignant aspirates in two time periods Hepatic 2011-2013 2015-2016 lesion (without ROSE) (with ROSE) Inadequate 22 6 Benign 1 Normal liver/reactive 19 32 hepatocytes 2 Regenerative nodule 9 2 3 Pyogenic abscess 6 4 4 Amoebic liver abscess 2 0 5 Aspergillus 0 1 Malignant 1 90 65 2 Metastatic deposits 4 7 Malignant, not otherwise 3 specified 8 24 4 Hepatocellular carcinoma 0 1 Total Hemangioendothelioma 160 142 (*) Rapid on-site evaluation (ROSE)
Masson intravascular hemangioendothelioma. Urology.
In 1986, Weiss and Enzinger [13] described a unique vascular tumor as hemangioendothelioma with combined features of cavernous hemangioma and Kaposi's sarcoma.
described a series of six patients with a leiomyosarcoma and one with hemangioendothelioma. In their series, the median survival was reported as 31 months [5].
The clinical differential diagnosis of subcutaneous LCH includes a wide variety of subcutaneous pathologies, including but not limited to vascular malformation, Kaposiform hemangioendothelioma, and infantile hemangioma.
Vascular malformations include slow-flow malformations (with venous, capillary and/or lymphatic components) and fast-flow malformations (with arterial components); while vascular neoplasms undergo mitosis and include such lesions as infantile hemangioma, congenital hemangioma, kaposiform hemangioendothelioma, tufted angioma, hemangiopericytoma, and angiosarcoma [2].
Epithelioid hemangioendothelioma (EHE) is a rare vascular neoplasm that occurs more often in women than men and usually arises within the liver, but can also present within other tissues including lung, bone, or peritoneum [1].