<?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>S0300-90412021001000839</article-id>
<article-id pub-id-type="doi">10.24245/gom.v89i10.5254</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tumor de Brenner maligno y embarazo. Caso clínico: revisión de la bibliografía]]></article-title>
<article-title xml:lang="en"><![CDATA[Malignant Brenner tumor and pregnancy. Case report: Literature review.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Loayza-Escalante]]></surname>
<given-names><![CDATA[María Luisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuadra-Espinilla]]></surname>
<given-names><![CDATA[María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero-Figueroa]]></surname>
<given-names><![CDATA[Karen Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodelgo-del Pino]]></surname>
<given-names><![CDATA[Amalia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sanz-García]]></surname>
<given-names><![CDATA[Virginia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bermejo-Aycart]]></surname>
<given-names><![CDATA[Juan Ignacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Universitario Infanta Sofía  ]]></institution>
<addr-line><![CDATA[San Sebastián de los Reyes ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Universitario de Fuenlabrada  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital General de Segovia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>España</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>10</numero>
<fpage>839</fpage>
<lpage>846</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0300-90412021001000839&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0300-90412021001000839&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0300-90412021001000839&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  ANTECEDENTES: La asociación del tumor de Brenner con el embarazo es excepcional: solo hay cuatro casos reportados, ninguno maligno.  CASO CLÍNICO:  Paciente de 33 años, con antecedente de un embarazo que finalizó mediante parto y sin contratiempos, sin antecedentes médico-quirúrgicos de interés. En la ecografía de la décima segunda semana se registró una imagen sonoluscente de paredes lisas, de 41 mm, dependiente del ovario izquierdo. Durante la cesárea se practicó la tumorectomía. El estudio histológico describió una neoplasia epitelial de células transicionales, con áreas benignas, proliferativas e infiltrativas, compatible con un tumor de Brenner maligno. Se trató con cirugía radical de cáncer de ovario y quimioterapia coadyuvante.  CONCLUSIONES: Es importante tener en mente al tumor de Brenner maligno como diagnóstico de exclusión ante tumoraciones de rápido y gran crecimiento durante el embarazo. En todas las ecografías de seguimiento del embarazo es indispensable valorar los anejos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  BACKGROUND: The association between Brenner tumor and pregnancy is extremely rare. Only four well-documented cases of benign Brenner tumor during pregnancy have been reported but nonmalignant.  CLINICAL CASE:  A 33-year-old female patient, with a history of a pregnancy that ended in delivery and without setbacks, with no medical or surgical history of interest. In the ultrasound scan of the twelfth week, a 41 mm smooth-walled sonoluscent image was recorded in the left ovary. Lumpectomy was performed during cesarean section. Histological study described a transitional cell epithelial neoplasm, with benign, proliferative and infiltrative areas, compatible with a malignant Brenner tumor. She was treated with radical ovarian cancer surgery and adjuvant chemotherapy.  CONCLUSION:  It is important to keep malignant Brenner&amp;apos;s tumor in mind as a diagnosis of exclusion in the presence of rapidly and rapidly growing tumors during pregnancy. It is very important to evaluate the appendages in all follow-up ultrasounds during pregnancy.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Tumor de Brenner]]></kwd>
<kwd lng="es"><![CDATA[embarazo]]></kwd>
<kwd lng="es"><![CDATA[tumor benigno de Brenner]]></kwd>
<kwd lng="es"><![CDATA[ovario izquierdo]]></kwd>
<kwd lng="es"><![CDATA[tumorectomía]]></kwd>
<kwd lng="es"><![CDATA[cesárea]]></kwd>
<kwd lng="es"><![CDATA[neoplasia epitelial de células transicionales]]></kwd>
<kwd lng="es"><![CDATA[seguimiento ecográfico]]></kwd>
<kwd lng="en"><![CDATA[Brenner tumor]]></kwd>
<kwd lng="en"><![CDATA[Pregnancy]]></kwd>
<kwd lng="en"><![CDATA[Bening Brenner tumor]]></kwd>
<kwd lng="en"><![CDATA[Left ovary]]></kwd>
<kwd lng="en"><![CDATA[Lumpectomy]]></kwd>
<kwd lng="en"><![CDATA[Cesarean section]]></kwd>
<kwd lng="en"><![CDATA[Transitional cell epithelial]]></kwd>
<kwd lng="en"><![CDATA[follow up ultrasounds]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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