<?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>2444-6483</journal-id>
<journal-title><![CDATA[Endoscopia]]></journal-title>
<abbrev-journal-title><![CDATA[Endoscopia]]></abbrev-journal-title>
<issn>2444-6483</issn>
<publisher>
<publisher-name><![CDATA[Asociación Mexicana de Endoscopia Gastrointestinal A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2444-64832019000400140</article-id>
<article-id pub-id-type="doi">10.24875/end.19000025</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Aspectos técnicos del muestreo de ganglios linfáticos por ultrasonido endoscópico]]></article-title>
<article-title xml:lang="en"><![CDATA[Technical aspects of lymph node sampling by endoscopic ultrasound]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Lara]]></surname>
<given-names><![CDATA[Ariosto Honorio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alonso-Larrága]]></surname>
<given-names><![CDATA[Juan Octavio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora-Levy]]></surname>
<given-names><![CDATA[José Guillermo de la]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Guerrero]]></surname>
<given-names><![CDATA[Angélica I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Mayo Clinic División de Gastroenterología y Hepatología ]]></institution>
<addr-line><![CDATA[Rochester Minn.]]></addr-line>
<country>E.U.A</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Cancerología Departamento de Endoscopia Gastrointestinal ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>31</volume>
<numero>4</numero>
<fpage>140</fpage>
<lpage>146</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2444-64832019000400140&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2444-64832019000400140&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2444-64832019000400140&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción y objetivo: La precisión diagnóstica de la biopsia por aspiración con aguja fina asistida por ultrasonido endoscópico (USE-BAAF) oscila entre el 68.4 y el 84.3%, dependiendo de varios factores. El objetivo de este estudio es demostrar la seguridad, rendimiento diagnóstico y aspectos técnicos involucrados en la adecuación del muestreo de ganglios linfáticos por USE-BAAF con énfasis en el uso de succión.  Material y métodos: Se tomaron 38 biopsias de ganglios linfáticos y se analizaron todas las variables que pudieran tener impacto sobre la adecuación final de las muestras. Se realizó un análisis descriptivo mediante medias y porcentajes, y un análisis inferencial mediante pruebas paramétricas y no paramétricas dependiendo de la distribución y tipo de variable, tomando en cuenta una significancia estadística de p &lt; 0.05.  Resultados: Se obtuvo material en el 100% de los estudios aunque solo se reportó un 73.7% de muestras adecuadas para el diagnóstico durante la revisión rápida de laminillas y un rendimiento diagnóstico final de un 84.2% después de la revisión del bloque celular (p = 0.031). En nuestro estudio no hubo impacto en la adecuación de la muestra al comparar el uso succión (55.3%) vs. no succión (44.7%) (p = 0.258).  Conclusiones: La revisión final de bloque celular aumenta el rendimiento diagnóstico de la USE-BAAF en ganglios linfáticos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction and objective: The diagnostic and accuracy of fine needle aspiration biopsy assisted by endoscopic ultrasound (USE-FNAB) ranges between 68.4% and 84.3%, depending on several factors. The objective of this study is to demonstrate the safety, diagnostic performance and technical aspects involved in the adequacy of lymph node sampling by EUS-FNAB with emphasis on the use of suction.  Material and methods: 38 lymph node biopsies were taken and analyzed for all variables that could have an impact on the final adaptation of the samples. A descriptive analysis was made by means and percentages, and an inferential analysis by parametric and nonparametric tests depending on the distribution and type of variable considering a statistical significance of p &lt; 0.05.  Results: Material was obtained in 100% of the studies, although only 73.7% of samples were reported adequate for diagnosis during the rapid cytology analysis, the final diagnostic yield was 84.2% after the review of the cell block (p = 0.031). In our study, there was no impact on the suitability of the sample when comparing the use of suction (55.3%) versus no suction (44.7%) (p = 0.258).  Conclusions: The final review of the cell block increases the diagnostic yield of USE-FNAB in lymph nodes.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ganglio linfático]]></kwd>
<kwd lng="es"><![CDATA[Endoscopia]]></kwd>
<kwd lng="es"><![CDATA[Biopsia]]></kwd>
<kwd lng="es"><![CDATA[Ultrasonido endoscópico]]></kwd>
<kwd lng="es"><![CDATA[Diagnóstico]]></kwd>
<kwd lng="en"><![CDATA[Lymph node]]></kwd>
<kwd lng="en"><![CDATA[Endoscopy]]></kwd>
<kwd lng="en"><![CDATA[Biopsy]]></kwd>
<kwd lng="en"><![CDATA[Endoscopic ultrasound]]></kwd>
<kwd lng="en"><![CDATA[Diagnosis]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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