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angioma

[an-jee-oh-muh] /ˌæn dʒiˈoʊ mə/
noun, plural angiomas, angiomata
[an-jee-oh-muh-tuh] /ˌæn dʒiˈoʊ mə tə/ (Show IPA).
Pathology
1.
a benign tumor consisting chiefly of dilated or newly formed blood vessels (hemangioma) or lymph vessels (lymphangioma)
Origin
1870-1875
1870-75; angi- + -oma
Related forms
angiomatous
[an-jee-om-uh-tuh s, -oh-muh-] /ˌæn dʒiˈɒm ə təs, -ˈoʊ mə-/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for angioma

angioma

/ˌændʒɪˈəʊmə/
noun (pl) -mas, -mata (-mətə)
1.
a tumour consisting of a mass of blood vessels (haemangioma) or a mass of lymphatic vessels (lymphangioma)
Derived Forms
angiomatous, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for angioma
angioma
1871, medical L., from Gk. angio-, comb. form of angeion "vessel" (see angio-) + -oma.
Online Etymology Dictionary, © 2010 Douglas Harper
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angioma in Medicine

angioma an·gi·o·ma (ān'jē-ō'mə)
n. pl. an·gi·o·mas or an·gi·o·ma·ta (-mə-tə)
A tumor composed chiefly of lymphatic vessels or blood vessels.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for angioma

congenital mass of blood vessels that intrudes into bone or other tissues, causing tissue death and, in the case of bone, structural weakening. Angiomas of the bone are often associated with angiomas of the skin or muscles. Most angiomas remain asymptomatic, but they may cause collapse of the vertebrae if they occur in the spine, and hemorrhage is a danger in some locations that expose them to stress. Treatment is usually by radiation, which causes clot formation within the mass of vascular tissue; the clot will then gradually calcify. Surgery also may be performed but involves a risk of hemorrhage.

Learn more about angioma with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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10
13
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