<?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>0016-3813</journal-id>
<journal-title><![CDATA[Gaceta médica de México]]></journal-title>
<abbrev-journal-title><![CDATA[Gac. Méd. Méx]]></abbrev-journal-title>
<issn>0016-3813</issn>
<publisher>
<publisher-name><![CDATA[Academia Nacional de Medicina de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0016-38132021000400431</article-id>
<article-id pub-id-type="doi">10.24875/gmm.20000871</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Resultados perinatales en la mujer joven con cáncer de mama y embarazo]]></article-title>
<article-title xml:lang="en"><![CDATA[Perinatal outcomes in young women with breast cancer and pregnancy]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arteaga-Gómez]]></surname>
<given-names><![CDATA[Ana C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez-Castellanos]]></surname>
<given-names><![CDATA[Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sepúlveda-Rivera]]></surname>
<given-names><![CDATA[Cintia María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rocha-Zavaleta]]></surname>
<given-names><![CDATA[Leticia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Muñoz]]></surname>
<given-names><![CDATA[Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes" Departamento de Oncología ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Investigaciones Biomédicas Departamento de Biología Molecular y Biotecnología]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes" Coordinación de Endocrinología Ginecológica y Perinatal ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>157</volume>
<numero>4</numero>
<fpage>431</fpage>
<lpage>436</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-38132021000400431&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-38132021000400431&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-38132021000400431&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: El cáncer de mama asociado a embarazo se define como la neoplasia maligna de mama que se diagnostica durante el embarazo, la lactancia o un año después del parto.  Objetivo: Analizar los resultados perinatales en una serie de pacientes jóvenes con cáncer de mama y embarazo en un hospital de tercer nivel.  Métodos: Estudio analítico retrospectivo de 26 mujeres menores de 40 años con cáncer de mama que resolvieron su embarazo en el Instituto Nacional de Perinatología entre 2013 y 2018. Se estudiaron las características clínico-patológicas, resultados perinatales y métodos de planificación familiar. Se obtuvieron porcentajes y medidas de tendencia central y se realizaron comparaciones con pruebas de chi cuadrada o exacta de Fisher.  Resultados: La asociación de cáncer de mama y embarazo se observó en 0.26 % de todos los nacimientos, la edad media de presentación fue de 34 años, 38.4 % de los casos cursaba con cáncer en estadio clínico avanzado y 57.1 % de las mujeres fueron tratadas con mastectomía radical modificada; no se apreció tendencia a mayores complicaciones perinatales.  Conclusiones: El cáncer de mama asociado a embarazo implica un reto oncológico y no parece ser un factor de riesgo para desenlaces perinatales adversos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: Breast cancer associated with pregnancy is defined as a malignant neoplasm of the breast that is diagnosed during pregnancy, breastfeeding or one year after delivery.  Objective: To analyze perinatal outcomes in a series of young patients with breast cancer and pregnancy in a tertiary care hospital.  Methods: Retrospective, analytical study of 26 women younger than 40 years of age with breast cancer who resolved their pregnancy at the National Institute of Perinatology between 2013 and 2018. Clinical-pathological characteristics, perinatal outcomes and family planning methods were studied. Percentages and central tendency measures were obtained, and comparisons were made with the chi-square test or Fisher's exact tests.  Results: Association of breast cancer with pregnancy was observed in 0.26 % of all births; mean age of presentation was 34 years, 38.4 % of cases had cancer at advanced clinical stages and 57.1 % of the women were treated with modified radical mastectomy; no trend towards higher perinatal complications was observed.  Conclusions: Breast cancer associated with pregnancy implies an oncological challenge and does not appear to be a risk factor for adverse perinatal outcomes.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cáncer de mama]]></kwd>
<kwd lng="es"><![CDATA[Embarazo]]></kwd>
<kwd lng="es"><![CDATA[Cuidados perinatales]]></kwd>
<kwd lng="es"><![CDATA[Anticoncepción]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
<kwd lng="en"><![CDATA[Breast cancer]]></kwd>
<kwd lng="en"><![CDATA[Pregnancy]]></kwd>
<kwd lng="en"><![CDATA[Perinatal care]]></kwd>
<kwd lng="en"><![CDATA[Contraception]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
</kwd-group>
</article-meta>
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