angioma

angioma

[an-jee-oh-muh] .
noun, plural angiomas, angiomata [an-jee-oh-muh-tuh] . Pathology.
a benign tumor consisting chiefly of dilated or newly formed blood vessels (hemangioma) or lymph vessels (lymphangioma)

Origin:
1870–75; angi- + -oma

angiomatous [an-jee-om-uh-tuhs, -oh-muh-] , adjective
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Collins
World English Dictionary
angioma (ˌændʒɪˈəʊmə)
 
n , pl -mas, -mata
a tumour consisting of a mass of blood vessels (haemangioma) or a mass of lymphatic vessels (lymphangioma)
 
angi'omatous
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

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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American Heritage
Medical Dictionary

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 Britannica
Encyclopedia

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.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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