<?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>0026-1742</journal-id>
<journal-title><![CDATA[Revista de la Facultad de Medicina (México)]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Fac. Med. (Méx.)]]></abbrev-journal-title>
<issn>0026-1742</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Medicina]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0026-17422023000200029</article-id>
<article-id pub-id-type="doi">10.22201/fm.24484865e.2023.66.2.04</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Carcinoma mucinoso de mama: una estirpe histológica rara de pronóstico favorable]]></article-title>
<article-title xml:lang="en"><![CDATA[Mucinous Carcinoma of the Breast: A Rare Histological Type with a Favorable Prognosis]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santiago Sanabria]]></surname>
<given-names><![CDATA[Leopoldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Porras Ibarra]]></surname>
<given-names><![CDATA[Gina Daniela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Malfavón Farías]]></surname>
<given-names><![CDATA[Montserrat]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Méndez Hirata]]></surname>
<given-names><![CDATA[Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Ángeles Lomas  ]]></institution>
<addr-line><![CDATA[Huixquilucan Estado de México]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Médico ABC Departamento de Ginecología y Obstetricia ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Panamericana Facultad de Ciencias de la Salud ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<volume>66</volume>
<numero>2</numero>
<fpage>29</fpage>
<lpage>37</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0026-17422023000200029&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0026-17422023000200029&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0026-17422023000200029&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El carcinoma mucinoso es una estirpe poco frecuente de cáncer de mama, la cual representa menos del 4% de todos los cánceres primarios. Suele presentarse en pacientes postmenopáusicas, alrededor de la séptima década de la vida. Clínicamente se caracteriza por manifestarse como un nódulo palpable, rara vez acompañado de otra sintomatología. Las herramientas de imagen, como la mastografía y el ultrasonido, son fundamentales para su diagnóstico; sin embargo, en algunas situaciones se puede subestimar el diagnóstico dado a las características similares que comparte con otras lesiones benignas. El diagnóstico definitivo se realiza por medio de histopatología. Debido a la rareza de estos tumores, no existe un consenso sobre el tratamiento más adecuado. Muchos autores concuerdan que la intervención quirúrgica continúa siendo la piedra angular, ya que tiene un impacto positivo en la supervivencia y baja incidencia de recurrencias. Esta se puede acompañar posteriormente de terapias endocrinas adyuvantes. Afortunadamente, el pronóstico de este tipo de tumores suele ser favorable, incluso la supervivencia supera el 90% a los 5 años.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Mucinous carcinoma is a rare type of breast cancer, which represents less than 4% of all primary cancers. It usually occurs in postmenopausal patients, around the seventh decade of life. Clinically, it is characterized by the presence of a palpable nodule, rarely accompanied by other symptoms. Imaging tools, such as mammogram and ultrasound, are essential for its diagnosis, however, in some situations the diagnosis can be underestimated due to the similar characteristics that it shares with other benign lesions. Definitive diagnosis is made by histopathology. Regarding treatment, there is no consensus on the most appropriate, due to the low incidence of these tumors. Many authors agree that surgical intervention continues to be the best option, showing a positive impact on survival and low recurrences. This can be accompanied later by adjuvant endocrine therapies. Fortunately, the prognosis of this type of tumor is usually favorable, even survival exceeds 90% at 5 years.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cáncer de mama]]></kwd>
<kwd lng="es"><![CDATA[carcinoma mucinoso]]></kwd>
<kwd lng="es"><![CDATA[características clínico-patológicas]]></kwd>
<kwd lng="es"><![CDATA[subtipos histológicos]]></kwd>
<kwd lng="en"><![CDATA[Breast cancer]]></kwd>
<kwd lng="en"><![CDATA[mucinous carcinoma]]></kwd>
<kwd lng="en"><![CDATA[clinicopathological features]]></kwd>
<kwd lng="en"><![CDATA[histological subtypes]]></kwd>
</kwd-group>
</article-meta>
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<article-title xml:lang=""><![CDATA[Mammary synchronous mucinous cystadenocarcinoma and columnar cell mucinous carcinoma: a case report]]></article-title>
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</article>
