<?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>1029-3019</journal-id>
<journal-title><![CDATA[MEDISAN]]></journal-title>
<abbrev-journal-title><![CDATA[MEDISAN]]></abbrev-journal-title>
<issn>1029-3019</issn>
<publisher>
<publisher-name><![CDATA[Centro Provincial de Información de Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1029-30192023000400004</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Valor de la elastografía por patrones de colores en la reestadificación del cáncer de recto]]></article-title>
<article-title xml:lang="en"><![CDATA[Value of elastography by color patterns in the restaging of rectal cancer]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Romero]]></surname>
<given-names><![CDATA[Misdrialis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alfonso Contino]]></surname>
<given-names><![CDATA[Norberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Brizuela Quintanilla]]></surname>
<given-names><![CDATA[Raúl Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barreras González]]></surname>
<given-names><![CDATA[Javier Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Militar Central Dr. Carlos Juan Finlay  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Nacional de Cirugía de Mínimo Acceso  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Militar Dr. Luis Díaz Soto  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<volume>27</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1029-30192023000400004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1029-30192023000400004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1029-30192023000400004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La elastografía cualitativa por ecografía endoscópica es una técnica para examinar las propiedades elásticas de los tejidos, que puede distinguir la fibrosis del tumor mediante patrones de colores.  Objetivo:  Determinar el valor de la elastografía por patrones de colores en la reestadificación del cáncer de recto.  Métodos:  Se efectuó un estudio observacional y descriptivo (serie de casos) de 54 pacientes con cáncer de recto atendidos en el Centro Nacional de Cirugía de Mínimo Acceso, en La Habana, entre septiembre del 2018 y diciembre del 2022, a quienes se les realizó elastografía por ecografía endoscópica para la reevaluación del tumor. Para determinar el valor de dicha técnica se calculó la sensibilidad, la especificidad, los valores predictivos positivo y negativo, las razones de verosimilitud positiva y negativa, así como el índice de Youden. Se estableció la concordancia diagnóstica según el índice kappa y el estudio histológico de la muestra tomada fue el estándar de referencia.  Resultados:  La concordancia de la elastografía con el resultado anatomopatológico fue buena (&#954;=0,84). La especificidad y el índice de validez resultaron ser de 91,7 y 94,4 %, respectivamente; mientras que el valor predictivo negativo fue de 84,6 %. Los 16 pacientes con patrón elastográfico mixto (ye3) tenían tumor residual localizado en alguna de las capas de la pared del recto. El índice de Youden alcanzó valores cercanos a 1.  Conclusiones:  El valor de esta técnica radica en su especificidad diagnóstica y en el valor predictivo negativo al diferenciar la fibrosis del tumor residual en la pared rectal.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  The qualitative elastography by endoscopic echography is a technique to examine the elastic properties of tissues that can distinguish the fibrosis of the tumor by means of color patterns.  Objective:  To determine the value of elastography by color patterns in the reestadification of the rectum cancer.  Methods:  An observational and descriptive study (serial cases) of 54 patients with rectum cancer was carried out, who were assisted in the National Center of Minimum Access Surgery, in Havana, between September, 2018 and December, 2022 to whom elastography by endoscopic echography were carried out for the reevaluation of the tumor. To determine the value of this technique the sensibility, specificity, the predictive positive and negative values, the positive and negative true ratio, as well as the index of Youden were calculated. The diagnostic consistency was established according to the kappa index and the histologic study of the sample was the reference standard.  Results:  The elastography consistency with the pathologic result was good (&#312;=0.84). The specificity and the index of validity were 91.7 and 94.4%, respectively; while the negative predictive value was 84.6%. The 16 patients with mixed elastographic pattern (ye3) had residual tumor located in some of the layers of the rectum wall. The Youden index reached values close to 1.  Conclusions:  The value of this technique resides in its diagnostic specificity and negative predictive value when differentiating fibrosis from the residual tumor in the rectal wall.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[elastografía]]></kwd>
<kwd lng="es"><![CDATA[diagnóstico por imagen]]></kwd>
<kwd lng="es"><![CDATA[ecografía endoscópica]]></kwd>
<kwd lng="es"><![CDATA[neoplasias del recto]]></kwd>
<kwd lng="es"><![CDATA[radioterapia]]></kwd>
<kwd lng="en"><![CDATA[elastography]]></kwd>
<kwd lng="en"><![CDATA[diagnosis by image]]></kwd>
<kwd lng="en"><![CDATA[endoscopic echography]]></kwd>
<kwd lng="en"><![CDATA[rectum neoplasms]]></kwd>
<kwd lng="en"><![CDATA[radiotherapy]]></kwd>
</kwd-group>
</article-meta>
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<surname><![CDATA[Mendoza Romero]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Elastografía cualitativa por ultrasonido endoscópico en la reestadificación del tumor de recto irradiado]]></article-title>
<source><![CDATA[Rev Cuban Med Mil]]></source>
<year>2021</year>
<volume>50</volume>
<numero>3</numero>
<issue>3</issue>
</nlm-citation>
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</ref-list>
</back>
</article>
