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        "resumen" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Es universalmente aceptado que el pol&#237;gono de Willis presenta variantes en su anatom&#237;a habitual&#44; hasta en el 60&#37; de los casos&#46;</p><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Algunas de &#233;stas se asocian a malformaciones vasculares&#44; como los aneurismas&#46; El conocimiento de estas variantes anat&#243;micas es de fundamental importancia con vistas al acto quir&#250;rgico&#44; con el fin de preservar arterias en topograf&#237;a poco habituales y cuya lesi&#243;n puede determinar secuelas invalidantes&#46;</p><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Los autores&#44; en revisi&#243;n anat&#243;mica de 192 hemisferios cerebrales&#44; encuentran tres variantes del sector anterior del Pol&#237;gono de Willis&#58; arteria &#225;cigos cerebral anterior&#44; arteria mediana del cuerpo calloso y arteria cerebral media accesoria&#46;</p><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Se realiza la descripci&#243;n anat&#243;mica de los hallazgos&#44; la correlaci&#243;n con la angiograf&#237;a y finalmente c&#243;mo influyeron estos cambios en el acto quir&#250;rgico de aneurismas de las regiones implicadas&#46;</p>"
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        "resumen" => "<p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">lt is worlwide accepted that in almost 60&#37; of cases&#44; anatomical variants in the Circle of Willis can be found&#46;</p><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Some of them are associated with vascular malformations such as aneurysms&#46; The knowledge of these anatomical variants is of vital importance when facing surgery&#44; being the aims to preserve arteries in unusual localisations&#44; which when injured can determine invalidating sequelae&#46;</p><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">The authors have reviewed 192 cerebral hemispheres&#44; finding three variants in the anterior Circle of Willis&#58; Azigos anterior cerebral artery&#59; Median artery of the corpus callosum and accesory middle cerebral artery&#46; The authors make an anatomical description of the findings&#44; their angiographical correlation&#44; and describe the influence of these changes during surgery of aneurysms in the involved regions&#46;</p>"
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Más opciones de artículo
Variaciones del sector anterior del polígono de Willis. Correlación anatomo-angiográfica y su implicancia en la cirugía de aneurismas intracraneanos (Arterias: ácigos cerebral anterior, mediana del cuerpo calloso y cerebral media accesoria)
Variants of the anterior circle of Willis. Anatomic and angiografic correlation and its implications in the surgery of intracranial aneurysms (Ácigos anterior cerebral artery, median artery of the corpus callosum and accesory middle cerebral artery)
F. Martínez*,**,
, E. Spagnuolo**, A. Calvo-Rubal**, S. Laza*, N. Sgarbi*, V.R. Soria-Vargas*, H. Prinzo*
* Departamento de Anatomía. Facultad de Medicina. Hospital Maciel. Montevideo. Uruguay
** Servicio de Neurología y Neurocirugía. Hospital Maciel. Montevideo. Uruguay

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