<?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>1870-7203</journal-id>
<journal-title><![CDATA[Acta médica Grupo Ángeles]]></journal-title>
<abbrev-journal-title><![CDATA[Acta méd. Grupo Ángeles]]></abbrev-journal-title>
<issn>1870-7203</issn>
<publisher>
<publisher-name><![CDATA[Grupo Ángeles, Servicios de Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-72032016000400230</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Sarcoma fibromixoide de bajo grado]]></article-title>
<article-title xml:lang="en"><![CDATA[Low-grade fibromyxoid sarcoma]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tinoco Téllez]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre Trigueros]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Domínguez Gasca]]></surname>
<given-names><![CDATA[Luis Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Domínguez Carrillo]]></surname>
<given-names><![CDATA[Luis Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Ángeles León Servicio de Oncología Quirúrgica ]]></institution>
<addr-line><![CDATA[León Guanajuato]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Ángeles León Servicio de Anatomopatología ]]></institution>
<addr-line><![CDATA[León Guanajuato]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Ángel León  ]]></institution>
<addr-line><![CDATA[Guadalajara Jalisco]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Guanajuato Facultad de Medicina de León ]]></institution>
<addr-line><![CDATA[León Guanajuato]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>14</volume>
<numero>4</numero>
<fpage>230</fpage>
<lpage>234</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-72032016000400230&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-72032016000400230&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-72032016000400230&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes:  El sarcoma fibromixoide de bajo grado es un tumor raro, descrito por Evans en 1987 como un tumor de curso clínico e histología aparentemente benignos, pero con comportamiento local y a distancia agresivo; corresponde al 0.7% de todos los tumores de tejido blando.  Caso clínico: Femenina de 49 años, deportista, con tres meses de evolución de dolor en el glúteo medio izquierdo durante la carrera; a la exploración: masa firme de 5 × 4 cm en el glúteo medio. Fue sometida a resección, con diagnóstico de sarcoma fibromixoide de grado histológico bajo, con positividad sólo a vimentina. Se le proporcionó radioterapia y 10 ciclos de quimioterapia. La TAC pulmonar a los 12 meses fue normal; a los 17 meses, la PET/CT mostró enfermedad metastásica múltiple. Actualmente, a dos años de diagnóstico, se encuentra en manejo paliativo y realizando ejercicio moderado.  Conclusiones:  El sarcoma fibromixoide de bajo grado es un tumor infrecuente y puede simular otras neoplasias de partes blandas; se describen recidivas y metástasis en hasta 68 y 40% de los casos, respectivamente.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background:  The low-grade fibromyxoid sarcoma is a rare tumor, described by Evans in 1987 as having a seemingly benign clinical course and histology, but local and distant aggressive behavior; it corresponds to 0.7% of all soft tissue tumors.  Case report:  Forty-nine-year-old female athlete, with a three-month history of pain in the middle left buttock during the race; exploration: 5 x 4 cm, firm mass in the gluteus medius. She underwent resection, with a diagnosis of low histologic grade fibromyxoid sarcoma with positivity only to vimentin. She was subjected to radiotherapy and 10 cycles of chemotherapy. The thoracic tomography was normal at 12 months; at 17 months, PET/CT showed multiple metastatic disease. At present (two years after the diagnosis), she is receiving palliative management and performing moderate exercise.  Conclusions:  Low-grade fibromyxoid sarcoma is a rare tumor and may mimic other soft tissue tumors; recurrences and metastases are described in up to 68% and 40% of cases, respectively.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Sarcoma fibromixoide de bajo grado]]></kwd>
<kwd lng="en"><![CDATA[Low-grade fibromyxoid sarcoma]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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