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        "resumen" => "<span class="elsevierStyleSectionTitle">Introducci&#243;n</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Las referencias anat&#243;micas que permiten ubicar los senos venosos durante los abordajes de fosa posterior&#44; son de utilidad para el neurocirujano&#46; El asterion es usado como referencia para localizar cl seno transverso &#40;ST&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Material y m&#233;todo</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Se utilizaron 50 hemicr&#225;neos de cad&#225;veres adultos&#46; Se estudi&#243; la relaci&#243;n del asterion con el ST&#44; la vena emisaria mastoidea &#40;VEM&#41;&#44; la cresta suprameatal y el inion&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Se identific&#243; el asterion en 49 casos&#46; En el 87&#46;8&#37; de las piezas&#44; se situ&#243; a la altura del seno transverso&#46; El 72&#46;2&#37; se ubic&#243; sobre el propio seno y el 27&#46;8&#37; sobre su codo&#46; Si se traza una l&#237;nea desde la cresta suprameatal al inion&#44; el asterion se ubica por debajo de esta l&#237;nea en el 88&#37; de los casos&#46;</p><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">El foramen de la VEM se identific&#243; en 46 oportunidades&#44; en el 36&#37; fue doble&#46;</p> <span class="elsevierStyleSectionTitle">Discusi&#243;n y conclusiones</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Seg&#250;n nuestros datos y los de otros autores&#44; el orificio de tr&#233;pano debe situarse por debajo y algo detr&#225;s del asterion para evitar la lesi&#243;n del seno transverso&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Background</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">In the surgical approaches to the posterior fossa&#44; the accurate location of the transverse-sigmoid sinus &#40;TS-SS&#41; complex is of great importance&#46; The asterion is a referal landmark to the transverse sinus location&#46;</p> <span class="elsevierStyleSectionTitle">Method</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Twenty-Iive skulls of adult cadavers were studied&#46; We seek for the relationships of the asterion with&#58; TS location&#44; mastoid emissary vein&#44; suprameatal</p><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">crest and inion&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">The asterion was found in 49 cases&#46; In the great majority of cases &#40;87&#46;8&#37;&#41; the asterion was over the TS &#40;72&#46;2&#37; over the sinus proper&#44; 27&#46;8&#37; over the TS-SS transition&#41;&#46;</p><p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">The mastoid emissary vein was present in 46 cases&#44; and in 36&#37; we found two veins&#46;</p> <span class="elsevierStyleSectionTitle">Discussion and conclusions</span><p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">The burr hole for posterolateral approaches to the posterior fossa must be located below and behind the asterion&#46;</p>"
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Anatomía topográfica del asterion
Topographyc anatomy of the asterion
F. Martínez*,**,
, A. Laxague*, L. Vida*, H. Prinzo*,**, N. Sgarbi**, V.R. Soria*, C. Bianchí***
* Departamento de Anatomía Humana Normal. Hospital Pereira Rossell. Montevideo. Uruguay
** Facultad de Medicina. Departamento de Neurocirugía. Hospital Pereira Rossell. Montevideo. Uruguay
*** Hospital de Clínicas Dr, Manuel Quintela. Facultad de Medicina, Servicio de Otorrinolaringlogía. Hospital Pereira Rossell. Montevideo. Uruguay

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