<?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>S0300-90412018000400281</article-id>
<article-id pub-id-type="doi">10.24245/gom.v86i3.1159</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tumor ovárico benigno proliferante mucinoso de tipo endocervical con hiperplasia microglandular]]></article-title>
<article-title xml:lang="en"><![CDATA[Benign mucinous endocervical type ovarian tumor with microglandular hyperplasia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Carpintero]]></surname>
<given-names><![CDATA[Nayara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salazar-Arquero]]></surname>
<given-names><![CDATA[Francisco Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ibáñez-Santamaría]]></surname>
<given-names><![CDATA[Ana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fuente-Valero]]></surname>
<given-names><![CDATA[Jesús de la]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aramendi-Sánchez]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Aguado]]></surname>
<given-names><![CDATA[Juan José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Infanta Leonor  ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Infanta Leonor  ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Infanta Leonor  ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<volume>86</volume>
<numero>4</numero>
<fpage>281</fpage>
<lpage>288</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0300-90412018000400281&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0300-90412018000400281&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0300-90412018000400281&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes La aparición más común de la hiperplasia micro-glandular es en el endocérvix, luego en sitios con epitelio glandular mucinoso; en el ovario es excepcional. Se ha descrito posterior a la exposición a la progesterona como anticonceptivo, sin antecedente de exposición hormonal y en mujeres posmenopáusicas. En 2014 la OMS clasificó los tumores mucinosos de ovario como: mucinosos fronterizos (borderline), seromucinosos fronterizos (tumores mucinosos de tipo endocervical-mülleriano) y carcinoma mucinoso.  Objetivo Exponer el diagnóstico de una tumoración ovárica benigna infrecuente, en una paciente que recibió estimulación hormonal con fines reproductivos.  Caso clínico Paciente de 38 años, con hallazgo ecográfico de formación quística de 25 x 33 mm de pared gruesa e irregular, con papila de 6 mm vascularizada y el resto de contenido quístico heterogéneo. La paciente había recibido hiperestimulación ovárica controlada en cuatro ocasiones, la última seis meses previos al hallazgo, momento en que recibía anticoncepción combinada, previa a un nuevo ciclo. Se le practicó anexectomía derecha y lavado peritoneal. El diagnóstico anatomopatológico fue de tumor mucinoso proliferante, de tipo endocervical, con hiperplasia microglandular y citología del líquido aspirado, inflamatoria. El perfil inmunohistoquímico fue: citoqueratina7 positiva y citoqueratina 20, CDX2 (proteína homeobox) y antígeno carcinoembrionario negativos. El anticuerpo monoclonal Ki-67 fue menor de 10%. Los receptores de estrógenos fueron focalmente positivos y los de progesterona positivos de forma difusa e intensa. La paciente evolucionó favorablemente después del tratamiento.  Conclusiones La hiperplasia microglandular puede aparecer en tumores mucinosos benignos de ovario y hay que considerar su posible implicación hormonal.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background Microglandular hyperplasia is most commonly located in the endocervix, but may appear in any location with mucinous glandular epithelium. Ovarian presentation is exceptional. It has been described in women after exposure to progesterone as contraceptive, without history of hormonal exposure and in postmenopausal. In 2014, WHO classified mucinous ovarian tumors as borderline mucinous, borderline seromucinous (mucinous tumors of the endocervical/mül-lerian type) and mucinous carcinoma.  Objective To describe the diagnosis of an uncommon benign ovarian tumor in a patient who underwent hormonal stimulation for reproductive purposes.  Clinical case 38-year-old patient with an ultrasound finding of a 25 x 33mm cystic formation with a thick and irregular wall, a 6mm vascularized papilla and a heterogeneous cystic content. The patient had undergone controlled ovarian hyperstimulation on four occasions, the last one 6 months prior to the finding, when she was on combined contraception prior to a new cycle. Right adnexectomy and peritoneal lavage were performed. The anatomopathological diagnosis was an endocervical mucinous proliferative tumor with microglan-dular hyperplasia and inflammatory cytology of the aspirated fluid. The immunohistochemical profile was: cytokeratin 7 positive and cytokeratin 20, CDX2 (homeobox protein) and CEA (carcinoembry-onic antigen) negative. The monoclonal antibody Ki-67 was &lt; 10%. Estrogen receptors were focally positive and progesterone receptors positive in a diffuse and intense form. After treatment, the patient had a favorable evolution.  Conclusions Microglandular hyperplasia may be present in ovarian mucinous benign tumors. A hormonal involvement should be considered.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Neoplasias mucinosas del ovario]]></kwd>
<kwd lng="es"><![CDATA[tumor mucinoso benigno]]></kwd>
<kwd lng="es"><![CDATA[tumor de ovario]]></kwd>
<kwd lng="es"><![CDATA[hiperplasia microglandular]]></kwd>
<kwd lng="es"><![CDATA[antígeno carcinoembrionario]]></kwd>
<kwd lng="en"><![CDATA[Mucinous ovarian neoplasms]]></kwd>
<kwd lng="en"><![CDATA[Benign mucinous]]></kwd>
<kwd lng="en"><![CDATA[Ovarian tumor]]></kwd>
<kwd lng="en"><![CDATA[Microglandular hyperplasia]]></kwd>
<kwd lng="en"><![CDATA[Carcinoembryonic antigen]]></kwd>
</kwd-group>
</article-meta>
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<given-names><![CDATA[HS]]></given-names>
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