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arteriovenous malformation |
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Arteriovenous malformation An abnormal tangle of arteries and veins in which the arteries feed directly into the veins without a normal intervening capillary bed. Mentioned in: Barbiturate-Induced Coma, Subarachnoid Hemorrhage arteriovenous malformation Neurology A potentially fatal congenital intracranial anomaly with large arteries feeding in a mass of communicating vessels which empty into large draining veins filled with 'arterialized' blood; large
AVMs produce a shunt large enough to ↑ cardiac output Location Brain, medulla, spinal cord Clinical Headaches, seizures, subarachnoid hemorrhage Imaging CT, MRI, endovascular angiography ASAP How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Tumors Juvenile hemangioma Rapidly involuting congenital hemangioma Noninvoluting congenital hemangioma Kaposiform hemangioendothelioma Tufted angioma * Vascular malformations High-flow Arteriovenous malformation Low-flow Venous malformation Lymphatic malformation Lymphatic-venous malformation Capillary (or venular) malformation (portwine stain) The patient ("PG") was a 44-year-old woman diagnosed with a right frontal arteriovenous malformation (AVM). Tests Monday revealed he had an arteriovenous malformation - a condition in which people are born with malformed, sometimes tangled, arteries or veins in the brain. |
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