<?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>2444-054X</journal-id>
<journal-title><![CDATA[Cirugía y cirujanos]]></journal-title>
<abbrev-journal-title><![CDATA[Cir. cir.]]></abbrev-journal-title>
<issn>2444-054X</issn>
<publisher>
<publisher-name><![CDATA[Academia Mexicana de Cirugía A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2444-054X2023000600785</article-id>
<article-id pub-id-type="doi">10.24875/ciru.22000467</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Características clinicopatológicas del cáncer colorrectal en pacientes menores de 30 años]]></article-title>
<article-title xml:lang="en"><![CDATA[Clinicopathological features of colorectal cancer patients under 30 years of age]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Basave]]></surname>
<given-names><![CDATA[Horacio N.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morales-Vázquez]]></surname>
<given-names><![CDATA[Flavia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miranda-Dévora]]></surname>
<given-names><![CDATA[Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olmos-García]]></surname>
<given-names><![CDATA[Juan P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Castañeda]]></surname>
<given-names><![CDATA[Karla F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Mogollan]]></surname>
<given-names><![CDATA[Luis G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-Montaño]]></surname>
<given-names><![CDATA[Wendy R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Cancerología Departamento de Gastroenterología ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Cancerología Departamento de Ginecología Oncológica ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Cancerología Oncología Médica Departamento de Tórax]]></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>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>91</volume>
<numero>6</numero>
<fpage>785</fpage>
<lpage>793</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2444-054X2023000600785&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2444-054X2023000600785&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2444-054X2023000600785&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: El cáncer colorrectal (CCR) es la segunda causa de muerte por cáncer en el mundo y se estima que fue responsable de casi 935,000 muertes durante el año 2020.  Objetivo: Describir las características clinicopatológicas, la supervivencia global (SG) y la supervivencia libre de progresión (SLP) en pacientes con CCR menores de 30 años.  Método: Estudio de cohorte retrospectivo en pacientes con diagnóstico de CCR menores de 30 años.  Resultados: Entre 2017 y 2021 se diagnosticaron 1823 pacientes con CCR, de los cuales 54 (2.96%) eran menores de 30 años. La SG a 4 años fue del 41.5%. Se encontró que la etapa clínica IV (hazard ratio [HR]: 6.212; intervalo de confianza del 95% [IC95%]: 2.504-15.414; p &lt; 0.001), recibir tratamiento neoadyuvante (HR: 0.705; IC95%: 0.499-0.996; p = 0.047) y no tener antecedente de síndrome de Lynch (HR:3.925; IC95%: 1.355-11.364; p = 0.012) son predictores de mortalidad independientes. La SLP a 4 años fue del 21.3%. La etapa clínica IV (HR: 2.418; IC95%: 1.000-5.850; p &lt; 0.050) y el no contar con diagnóstico de síndrome de Lynch (HR: 3.800; IC95%: 1.398-10.326; p = 0.009) son predictores independientes.  Conclusiones: Los pacientes jóvenes son diagnosticados con CCR en etapas avanzadas. Los síntomas iniciales, junto con la evaluación, independientemente de la edad, son cruciales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Colorectal cancer (CRC) is the second cause of cancer death in the world and is estimated to have been responsible for almost 935,000 deaths during 2020.  Objective: Describe clinicopathological features, overall survival (OS) and progression-free survival (PFS) in CRC patients under 30 years.  Method: This is a retrospective cohort study in patients under 30 years diagnosed with CRC.  Results: From 2017 to 2021, 1823 patients were diagnosed with CRC, of which 54 (2.96%) were under 30 years. The OS, during 4 years, was 41.5%. The clinical stage found IV (hazard ratio [HR]: 6.212; 95% confidence interval [95% CI]: 2.504-15.414; p &lt; 0.001), giving neoadjuvant therapy (HR: 0.705; 95% CI: 0.499-0.996; p = 0.047) and no medical history of Lynch syndrome (HR: 3.925; 95% CI: 1.355-11.364; p = 0.012) are independent predictors of mortality. The PFS, during 4 years, was 21.3%. Clinical stage IV (HR: 2.418; 95% CI: 1.000-5.850; p &lt; 0.050), and no diagnosis of Lynch syndrome (HR: 3.800; 95% CI: 1.398-10.326; p = 0.009) are independent predictors.  Conclusions: Younger patients are usually diagnosed with CRC in advanced stages. Early symptoms and evaluation, irrespective of age, are crucial.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cáncer de colon]]></kwd>
<kwd lng="es"><![CDATA[Cáncer de recto]]></kwd>
<kwd lng="es"><![CDATA[Adultos jóvenes]]></kwd>
<kwd lng="es"><![CDATA[Hereditario]]></kwd>
<kwd lng="en"><![CDATA[Colon cancer]]></kwd>
<kwd lng="en"><![CDATA[Rectum cancer]]></kwd>
<kwd lng="en"><![CDATA[Young adult]]></kwd>
<kwd lng="en"><![CDATA[Hereditary]]></kwd>
</kwd-group>
</article-meta>
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