spider telangiectasia

telangiectasia /tel·an·gi·ec·ta·sia/ (tel-an″je-ek-ta´zhah) permanent dilation of preexisting small blood vessels, creating focal red lesions.

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hereditary hemorrhagic telangiectasia  a hereditary condition marked by multiple small telangiectases of the skin, mucous membranes, and other organs, associated with recurrent episodes of bleeding from affected sites and gross or occult melena.

spider telangiectasia  vascular spider.

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spider telangiectasia

n.

See arterial spider.

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spider telangiectasia

Etymology: ME, spithre + Gk, telos, end, angeion, vessel, ektasis, dilation

a branched group of dilated capillary blood vessels forming a spiderlike image on the skin. Also called nevus araneus.

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Spider Angioma

A superficial spider-like cluster of capillaries composed of a central ‘feeder’ vessel and multiple minute tortuous and dilated radiating vessels with a peripheral erythaema; when the involved vessel is large, it may pulsate and blanch on pressure; while classically due to increased circulating oestrogens as seen in pregnancy and alcoholic cirrhosis, SAs may occur in chronic hepatic congestion 2º to constrictive pericarditis and may be a normal birthmark in children

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telangiectasia [tel-an″je-ek-ta´zhah]

a vascular lesion formed by dilation of a group of small blood vessels. adj., adj telangiectat´ic. Superficial telangiectasias are sometimes seen in the normal newborn on the nape of the neck (stork bites) or on the upper eyelids or upper lip (flame nevi). They usually disappear within the first year of life.

hereditary hemorrhagic telangiectasia an autosomal dominant vascular anomaly characterized by the presence of multiple small telangiectases of the skin, mucous membranes, gastrointestinal tract, and other organs associated with recurrent episodes of bleeding from affected sites and gross occult melena.

spider telangiectasia vascular spider.