<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1870-7203</journal-id>
<journal-title><![CDATA[Acta médica Grupo Ángeles]]></journal-title>
<abbrev-journal-title><![CDATA[Acta méd. Grupo Ángeles]]></abbrev-journal-title>
<issn>1870-7203</issn>
<publisher>
<publisher-name><![CDATA[Grupo Ángeles, Servicios de Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-72032024000300231</article-id>
<article-id pub-id-type="doi">10.35366/116832</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Agenesia de la supraestructura del estribo]]></article-title>
<article-title xml:lang="en"><![CDATA[Upper structure stapes agenesis]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Magaña Reyes]]></surname>
<given-names><![CDATA[Jorge Ignacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Domínguez Carrillo]]></surname>
<given-names><![CDATA[Luis Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Gestalt Imagen  ]]></institution>
<addr-line><![CDATA[León Guanajuato]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Angeles León División del Medicina ]]></institution>
<addr-line><![CDATA[León Guanajuato]]></addr-line>
<country>Méxíco</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2024</year>
</pub-date>
<volume>22</volume>
<numero>3</numero>
<fpage>231</fpage>
<lpage>232</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-72032024000300231&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-72032024000300231&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-72032024000300231&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  La agenesia de la cadena osicular es rara (0.5 a 1.2%), secundaria a mal desarrollo del primer y segundo arcos faríngeos en las semanas tres a 10 de gestación.  Caso clínico:  Femenino de 22 años con hipoacusia conductiva en oído izquierdo. A la exploración: pabellones auriculares y membranas timpánicas normales, reflejo estapedial ipsilateral ausente, derecho normal. Audiometría normal en oído derecho (OD) y curva de perfil ascendente, por hipoacusia severa, conductiva en oído izquierdo (OI). La tomografía mostró agenesia del proceso largo del yunque y del estribo izquierdo, presente la platina.  Conclusión:  Paciente con hipoacusia de transmisión por agenesia de la supraestructura del estribo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  Ossicular chain agenesis is rare (0.5 to 1.2%), secondary to maldevelopment of the first and second pharyngeal arches in weeks 3 to 10 of gestation.  Clinical case:  22-year-old female with conductive hearing loss in the left ear. On examination: normal auricles and tympanic membranes, absent ipsilateral stapedial reflex, normal right Audiometry normal in right ear (RE) and ascending profile curve, due to severe hearing loss, conductive in left ear (LE). Tomography showed agenesis of the long process of the incus and of the left stapes, the footplate present.  Conclusion:  Patient with transmission hearing loss due to agenesis of the stapes suprastructure.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[hipoacusia]]></kwd>
<kwd lng="es"><![CDATA[sordera]]></kwd>
<kwd lng="es"><![CDATA[agenesia de huesecillos de cadena articular]]></kwd>
<kwd lng="es"><![CDATA[anomalía congénita del oído]]></kwd>
<kwd lng="en"><![CDATA[hearing loss]]></kwd>
<kwd lng="en"><![CDATA[deafness]]></kwd>
<kwd lng="en"><![CDATA[agenesis of articular chain ossicles]]></kwd>
<kwd lng="en"><![CDATA[congenital anomaly of the ear]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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</back>
</article>
