<?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>2444-7986</journal-id>
<journal-title><![CDATA[Revista ORL]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. ORL]]></abbrev-journal-title>
<issn>2444-7986</issn>
<publisher>
<publisher-name><![CDATA[Ediciones Universidad de Salamanca]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2444-79862020000200003</article-id>
<article-id pub-id-type="doi">10.14201/orl.21649</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Colesteatoma de conducto auditivo externo: estudio de una serie de casos]]></article-title>
<article-title xml:lang="en"><![CDATA[Cholesteatoma of the external auditory canal: case series study]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Viveros-Díez]]></surname>
<given-names><![CDATA[Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Benito-Orejas]]></surname>
<given-names><![CDATA[José Ignacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández-Rodriguez]]></surname>
<given-names><![CDATA[Ana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cifuentes-Navas]]></surname>
<given-names><![CDATA[Viviana Andrea]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Salas]]></surname>
<given-names><![CDATA[Jesús Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morais-Pérez]]></surname>
<given-names><![CDATA[Darío]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Sanidad de Castilla y León Hospital Clínico Universitario Servicio de Otorrinolaringología y Patología Cervicofacial]]></institution>
<addr-line><![CDATA[Valladolid ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>11</volume>
<numero>2</numero>
<fpage>129</fpage>
<lpage>138</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S2444-79862020000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S2444-79862020000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S2444-79862020000200003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción y objetivos: El colesteatoma de conducto auditivo externo (CCAE) es un proceso patológico poco frecuente, caracterizado por la invasión de tejido escamoso en un área del canal auditivo, que progresa hasta la destrucción ósea. Debido a la escasez de casos publicados hemos considerado de utilidad esta revisión.  Material y métodos: Estudio prospectivo y observacional desde el año 2000, de 18 pacientes diagnosticados clínicamente de CCAE en nuestro servicio de ORL.  Resultados: El porcentaje de hombres y mujeres es similar, con una edad media de diagnóstico de 60 años. La localización más frecuente es posteroinferior y en la mayor parte de casos el origen es primario. La otalgia, la otorrea y la hipoacusia fueron los síntomas principales, siendo menos habitual el prurito y excepcional la debilidad facial. En general el tratamiento es conservador, pero resultó necesario el abordaje quirúrgico en un tercio de pacientes mediante canaloplastia, siguiendo el esquema expuesto, o la mastoidectomía, en función de la extensión de las lesiones.  Conclusiones: Aunque desconocemos los mecanismos patogénicos responsables de la formación y desarrollo del CCAE, la inclusión de queratina entre el epitelio y el hueso, con la participación del periostio, parecen ser los desencadenantes del proceso. El diagnóstico es clínico y su extensión determina el empleo de un tratamiento local o quirúrgico, que suele ser resolutivo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: External auditory canal cholesteatoma (EACC) is a rare entity characterized by the invasion of squamous tissue in the auditory canal, that progresses to bone destruction. Due to the scarcity of published cases of EACC, we have deemed useful this review.  Material and methods: Prospective and observational study from the year 2000 to the present in 18 patients clinically diagnosed with EACC in our ORL service.  Results: The percentage of men and women is similar, with a mean age at diagnosis of 60 years. The most frequently location was postero-inferior, and in most cases, the origin is primary. Otalgia, otorrhea and subjective hearing loss were the main symptoms, being less common the pruritus and exceptional facial weakness. Overall, the treatment is conservative, but it was necessary surgical treatment on one-third of the patients, performing canaloplasty or mastoidectomy, according to the extent of injuries.  Conclusions: Although we do not know the genesis and pathogenic mechanisms responsible of EACC formation and development, the inclusion of keratin between the epithelium and bone, with the participation of the periosteum, seems to be the trigger of this process. The diagnosis is clinical, and its extension determines the use of a local or surgical treatment, which is usually resolutive.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Colesteatoma del conducto auditivo externo]]></kwd>
<kwd lng="es"><![CDATA[Colesteatoma]]></kwd>
<kwd lng="es"><![CDATA[Conducto auditivo externo]]></kwd>
<kwd lng="es"><![CDATA[Canaloplastia]]></kwd>
<kwd lng="es"><![CDATA[Cirugía]]></kwd>
<kwd lng="es"><![CDATA[TC]]></kwd>
<kwd lng="en"><![CDATA[External auditory canal cholestatoma]]></kwd>
<kwd lng="en"><![CDATA[Cholesteatoma]]></kwd>
<kwd lng="en"><![CDATA[External ear canal]]></kwd>
<kwd lng="en"><![CDATA[Canaloplasty]]></kwd>
<kwd lng="en"><![CDATA[Surgery]]></kwd>
<kwd lng="en"><![CDATA[CT]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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