<?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>0034-7434</journal-id>
<journal-title><![CDATA[Revista Colombiana de Obstetricia y Ginecología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Colomb Obstet Ginecol]]></abbrev-journal-title>
<issn>0034-7434</issn>
<publisher>
<publisher-name><![CDATA[Federación Colombiana de Obstetricia y GinecologíaRevista Colombiana de Obstetricia y Ginecología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-74342020000200195</article-id>
<article-id pub-id-type="doi">10.18597/rcog.3477</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[TUMOR RETROPERITONEAL PRIMARIO DURANTE EL EMBARAZO: REPORTE DE UN CASO Y REVISIÓN DE LA LITERATURA]]></article-title>
<article-title xml:lang="en"><![CDATA[Primary retroperitoneal tumor during pregnancy: Case report and review of the literature]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aragón-Mendoza]]></surname>
<given-names><![CDATA[Rafael Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arenas-Gamboa]]></surname>
<given-names><![CDATA[Jaime]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vieira-Serna]]></surname>
<given-names><![CDATA[Santiago]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sierra]]></surname>
<given-names><![CDATA[Isaac Alfonso Juan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Clínica Universitaria Colombia  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Colombia Clínica Universitaria Colombia ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Clínica Universitaria Colombia Fundación Universitaria Sanitas ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Fundación Universitaria Sanitas  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>71</volume>
<numero>2</numero>
<fpage>195</fpage>
<lpage>207</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0034-74342020000200195&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0034-74342020000200195&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0034-74342020000200195&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Objetivo:  reportar el caso de una paciente gestante con diagnóstico de tumor retroperitoneal primario y hacer revisión de la literatura del diagnóstico, tratamiento y pronóstico materno-fetal de esta entidad durante el embarazo.  Materiales y métodos:  gestante de 19 años que consulta por tumor retroperitoneal identificado por ecografía, se realizó biopsia percutánea con resultado de tumor benigno; parto por cesárea con recién nacido sano. A los 4 meses se realizó resección quirúrgica, la histopatología mostró un teratoma quístico maduro. Se realizó búsqueda en las bases de datos de: Medline vía PubMed, Lilacs, SciELO y ScienceDirect, con los términos: &#8220;embarazo&#8221;, &#8220;neoplasias&#8221; y &#8220;neoplasias retroperitoneales&#8221;, incluyendo reportes y series de caso de tumores retroperitoneales en el embarazo. Se identificó el diagnóstico, tratamiento y pronóstico materno-fetal  Resultados:  se identificaron 1.658 títulos, de los cuales 34 reportes de casos y una serie de casos cumplieron con los criterios de inclusión. El 62,9 % eran tumores benignos. El diagnóstico se hizo como hallazgo incidental en el 63 % de los casos, el ultrasonido identificó la masa en el 77 %, la biopsia percutánea se utilizó en el 8 % de los casos incluyendo el reportado. El tratamiento quirúrgico fue utilizado en el 88 % de los casos, generalmente después del parto. Hubo mortalidad materna en el 8,5 % de los casos. El pronóstico fetal fue bueno en el 65 % de las gestaciones.  Conclusión:  los tumores retroperitoneales en la gestación, a pesar de ser principalmente benignos, tienen un pronóstico materno y fetal reservado en un importante número de casos. Se requiere evaluar los beneficios y riesgo de la biopsia percutánea.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Objective:  To report the case of a pregnant patient diagnosed with a primary retroperitoneal tumor and to conduct a review of the literature pertaining to the diagnosis, treatment and maternal-fetal prognosis of this disease condition during pregnancy.  Materials and methods:  A 19-year-old patient who presented with a retroperitoneal tumor identified on ultrasound. The results of the percutaneous biopsy showed a benign tumor. A healthy neonate was delivered by cesarean section. Surgical resection was performed four months later, and histopathology showed a mature cystic teratoma. A search was conduced in the Medline via PubMed, Lilacs, SciELO and ScienceDirect databases using the terms &#8220;pregnancy,&#8221; &#8220;neoplasms,&#8221; and &#8220;retroperitoneal neoplasms,&#8221; including case reports and case series of retroperitoneal tumors during pregnancy. Diagnosis, treatment and maternal-fetal prognosis were identified.  Results:  Overall, 1658 titles were identified. Of these, 34 case reports and 1 case series met the inclusion criteria. Of the cases, 62.9 % were benign. Diagnosis was made as an incidental finding in 63 % of cases, and 77 % of the masses were identified on ultrasound. Percutaneous biopsy was used in 8 % of cases, including the case reported here. Surgical treatment was used in 88 % of cases usually after delivery. Maternal mortality occurred in 8.5 % of cases. Fetal prognosis was good in 65 % of the pregnancies.  Conclusion:  Despite being frequently benign, retroperitoneal tumors during gestation have a reserved maternal and fetal prognosis in a substantial number of cases. There is a need to assess the risks and benefits of percutaneous biopsy.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[embarazo]]></kwd>
<kwd lng="es"><![CDATA[neoplasias]]></kwd>
<kwd lng="es"><![CDATA[neoplasias retroperitoneales.]]></kwd>
<kwd lng="en"><![CDATA[Pregnancy]]></kwd>
<kwd lng="en"><![CDATA[neoplasms]]></kwd>
<kwd lng="en"><![CDATA[retroperitoneal neoplasms]]></kwd>
</kwd-group>
</article-meta>
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