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・ Spider (locomotive)
・ Spider (magazine)
・ Spider (nickname)
・ Spider (novel)
・ Spider (polarimeter)
・ Spider (portal)
・ Spider (pulp fiction)
・ Spider (roller coaster)
・ Spider (solitaire)
・ Spider (utensil)
・ Spider anatomy
・ Spider and Fly
・ Spider and Rose
・ Spider and the Fly
・ Spider and Web
Spider angioma
・ Spider Baby
・ Spider beetle
・ Spider behavior
・ Spider Bennett
・ Spider bite
・ Spider Blues
・ Spider Bones
・ Spider Boom
・ Spider Boy (novel)
・ Spider Bridge at Falls of Schuylkill
・ Spider cannibalism
・ Spider Cave
・ Spider Cave (Gibraltar)
・ Spider Clark


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Spider angioma : ウィキペディア英語版
Spider angioma

A spider angioma (also known as a nevus araneus, spider nevus, vascular spider, and spider telangiectasia) is a type of telangiectasis (swollen blood vessels) found slightly beneath the skin surface, often containing a central red spot and reddish extensions which radiate outwards like a spider's web. They are common and may be benign, presenting in around 10-15% of healthy adults and young children. However, having more than 3 spider angiomas is likely to be abnormal and may be a sign of liver disease. It also suggests the probability of esophageal varices.〔http://jama.jamanetwork.com/article.aspx?articleid=1355997〕
==Distribution==
Spider angiomas are found only in the distribution of the superior vena cava, and are thus commonly found on the face, neck, upper part of the trunk, and arms. They may also be present on the backs of the hands and fingers in young children.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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