<?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>0138-6557</journal-id>
<journal-title><![CDATA[Revista Cubana de Medicina Militar]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cub Med Mil]]></abbrev-journal-title>
<issn>0138-6557</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias MédicasEditorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0138-65572021000300011</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Elastografía cualitativa por ultrasonido endoscópico en la reestadificación del tumor de recto irradiado]]></article-title>
<article-title xml:lang="en"><![CDATA[Qualitative elastography by endoscopic ultrasound in the restaging of the irradiated rectal tumor]]></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[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[Alfonso Contino]]></surname>
<given-names><![CDATA[Norberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Menocal Hernández]]></surname>
<given-names><![CDATA[Jorge Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Raventós Vaquer]]></surname>
<given-names><![CDATA[Pablo Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza Romero]]></surname>
<given-names><![CDATA[Ana Mercedes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Militar Central "Dr. Carlos J. 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[,Universidad de Ciencias Médicas de las Fuerzas Armadas Revolucionarias  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>50</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0138-65572021000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0138-65572021000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0138-65572021000300011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: En la reestadificación del paciente con tumor de recto irradiado, la elastografía cualitativa por ultrasonido endoscópico puede identificar la fibrosis y diferenciarla del tumor residual.  Objetivo:  Determinar la utilidad de la elastografía cualitativa por ultrasonido endoscópico en la reestadificación del tumor de recto irradiado.  Métodos:  Estudio observacional y descriptivo (serie de casos), en 31 pacientes con tumor de recto irradiado, reestadificados mediante elastografía cualitativa por ultrasonido endoscópico. Para determinar la utilidad de la elastografía se calcularon: sensibilidad, especificidad, valor predictivo positivo, valor predictivo negativo, índice de Youden y concordancia diagnóstica según índice kappa, de la elastografía y del ultrasonido endoscópico por separado, estos resultados fueron comparados en ambas pruebas diagnósticas. El estudio histológico de la pieza quirúrgica fue el estándar de referencia.  Resultados: El índice de concordancia del ultrasonido endoscópico (77,4 %), por elastografía (87,1 %). El ultrasonido endoscópico mostró mayor sensibilidad y valor predictivo negativo que la elastografía, por lo que la posibilidad de descartar presencia de tumor con un resultado negativo fue superior. La elastografía tuvo mayor especificidad (77,78 %) y valor predictivo positivo (90,91 %) que el ultrasonido endoscópico (22,22 y 75,86 %); fue más útil para confirmar el diagnóstico de tumor.  Conclusiones: La utilidad de la elastografía cualitativa asociada al ultrasonido endoscópico, en la reestadificación del tumor de recto irradiado, consiste en incrementar la especificidad del estudio y discernir mejor entre la fibrosis y el tumor residual.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Qualitative endoscopic ultrasound elastography can identify fibrosis and differentiate it from residual tumor in the re-staging of patients with irradiated rectal tumors.  Objective: To determine the usefulness of qualitative endoscopic ultrasound elastography in the re-staging of the irradiated rectal tumor.  Methods: An observational and descriptive study (series of cases) was carried out in 31 patients with irradiated rectal tumor, restaged by means of Qualitative elastography by endoscopic ultrasound. To determine the usefulness of elastography, the following were calculated: sensitivity, specificity, positive predictive value, negative predictive value, Youden index and diagnostic agreement according to kappa, elastography and endoscopic ultrasound separately; these results were compared in both diagnostic tests. The histological study of the surgical specimen was the reference standard.  Results:  The concordance index of endoscopic ultrasound (77.4%), that obtained by elastography (87.1%). Endoscopic ultrasound showed greater sensitivity and negative predictive value than elastography, so the possibility of ruling out the presence of a tumor with a negative result was higher. Elastography had greater specificity (77.78%) and positive predictive value (90.91%) than endoscopic ultrasound (22.22 and 75.86%); it was most helpful in confirming the tumor diagnosis.  Conclusions:  The usefulness of qualitative elastography associated with endoscopic ultrasound, in the re-staging of the irradiated rectal tumor, consists in increasing the specificity of the study, thus allowing a better discernment between fibrosis and residual tumor.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[elastografía]]></kwd>
<kwd lng="es"><![CDATA[ultrasonido endoscópico]]></kwd>
<kwd lng="es"><![CDATA[tumor de recto]]></kwd>
<kwd lng="en"><![CDATA[elastography]]></kwd>
<kwd lng="en"><![CDATA[endoscopic ultrasound]]></kwd>
<kwd lng="en"><![CDATA[rectal tumor]]></kwd>
</kwd-group>
</article-meta>
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