<?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>0300-9041</journal-id>
<journal-title><![CDATA[Ginecología y obstetricia de México]]></journal-title>
<abbrev-journal-title><![CDATA[Ginecol. obstet. Méx.]]></abbrev-journal-title>
<issn>0300-9041</issn>
<publisher>
<publisher-name><![CDATA[Federación Mexicana de Colegios de Obstetricia y Ginecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0300-90412021000900688</article-id>
<article-id pub-id-type="doi">10.24245/gom.v89i9.5698</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Ganglio centinela en cáncer de mama: técnica y factores pronósticos]]></article-title>
<article-title xml:lang="en"><![CDATA[Sentinel node in breast cancer: technique and prognosis factors]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bonilla-Sepúlveda]]></surname>
<given-names><![CDATA[Óscar Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Grupo de Investigaciones Biomédicas UniRemington  ]]></institution>
<addr-line><![CDATA[Medellín Antioquia]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>89</volume>
<numero>9</numero>
<fpage>688</fpage>
<lpage>695</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0300-90412021000900688&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0300-90412021000900688&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0300-90412021000900688&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  OBJETIVO: Describir las características sociodemográficas, clínicas, técnica quirúrgica y factores pronósticos de la técnica del ganglio centinela en cáncer de mama en un centro de referencia.  MATERIALES Y MÉTODOS: Estudio retrospectivo, analítico, con fuentes secundarias de información de mujeres con cáncer de mama sin afectación clínica axilar, llevadas a cirugía con biopsia de ganglio centinela, en el registro personal de un cirujano del 1 de mayo de 2018 al 31 de octubre de 2020, en un centro de referencia en Medellín, Colombia. Se recopilaron los datos demográficos, clínicos y paraclínicos y se analizaron con estadística descriptiva.  RESULTADOS: Se practicaron 552 cirugías axilares, 353 biopsias de ganglio centinela (63.9 %) y 199 linfadenectomías (36%). La edad media fue 60 años (DE ± 12.6). El 86.1% estaba en estadio clínico 0-I-II. El tamaño tumoral medio fue 2.6 cm. La tasa de detección del ganglio centinela fue de 98.3 % (n = 347). En promedio se resecaron 1.9 ganglios (DE ± 1.3) de los que 23.1% (n = 80) fueron metastásicos. Se evitó el vaciamiento axilar en el 83.6 % (n = 295).  CONCLUSIÓN: En esta muestra, la técnica del ganglio centinela para la estadificación axilar tuvo una alta tasa de detección, se encontró mayor afectación del ganglio centinela en el transcurso de la mastectomía, congelación, subtipos luminal A y B y en menor proporción en la quimioterapia preparatoria.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  OBJECTIVE: To describe the sociodemographic and clinical characteristics, surgical technique, and prognostic factors of the sentinel lymph node technique in breast cancer in a referral center.  MATERIALS AND METHODS: Retrospective, analytical study, with secondary sources of information of women with breast cancer without clinical axillary involvement, taken to surgery with sentinel node biopsy, in the personal registry of a surgeon from May 1, 2018, to October 31, 2020, in a referral center in Medellin, Colombia. Demographic, clinical and paraclinical data were collected and analyzed with descriptive statistics.  RESULTS:  552 axillary surgeries were performed, 353 sentinel node biopsies (63.9 %) and 199 lymphadenectomies (36%). The mean age was 60 years (SD ± 12.6). Clinical stage 0-I-II was 86.1%. The mean tumor size was 2.6 cm. The sentinel node detection rate was 98.3% (n = 347). On average 1.9 nodes were resected (SD ± 1.3) of which 23.1% (n = 80) were metastatic. Axillary emptying was avoided in 83.6% (n = 295).  CONCLUSION: In this sample, the sentinel node technique for axillary staging had a high detection rate, with greater sentinel node involvement found during mastectomy, freezing, luminal subtypes A and B and in a lower proportion in preparative chemotherapy.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ganglio centinela]]></kwd>
<kwd lng="es"><![CDATA[cáncer de mama]]></kwd>
<kwd lng="es"><![CDATA[axilar]]></kwd>
<kwd lng="es"><![CDATA[biopsia de ganglio centinela]]></kwd>
<kwd lng="es"><![CDATA[edad media]]></kwd>
<kwd lng="es"><![CDATA[Colombia]]></kwd>
<kwd lng="es"><![CDATA[mastectomía]]></kwd>
<kwd lng="en"><![CDATA[Sentinel lymph node]]></kwd>
<kwd lng="en"><![CDATA[Breast cancer]]></kwd>
<kwd lng="en"><![CDATA[Axillary]]></kwd>
<kwd lng="en"><![CDATA[Sentinel node biopsy]]></kwd>
<kwd lng="en"><![CDATA[Middle aged]]></kwd>
<kwd lng="en"><![CDATA[Colombia]]></kwd>
<kwd lng="en"><![CDATA[Mastectomy]]></kwd>
</kwd-group>
</article-meta>
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