<?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>0035-0052</journal-id>
<journal-title><![CDATA[Revista mexicana de pediatría]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. pediatr.]]></abbrev-journal-title>
<issn>0035-0052</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Pediatría A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-00522020000100038</article-id>
<article-id pub-id-type="doi">10.35366/93267</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Recidiva de osteosarcoma: detección por gammagrafía y SPECT/CT empleando 99mTc-sestamibi]]></article-title>
<article-title xml:lang="en"><![CDATA[Osteosarcoma recurrence: detection by scintigraphy and SPECT/CT using 99mTc-sestamibi]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Briones-Velázquez]]></surname>
<given-names><![CDATA[Eiber Alexis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luna-de-la-Luz]]></surname>
<given-names><![CDATA[Cristian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Centro Médico Nacional &#8220;La Raza&#8221; Hospital de Especialidades Antonio Fraga Mouret]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Centro Médico Nacional &#8220;La Raza&#8221; Hospital de Especialidades Antonio Fraga Mouret]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2020</year>
</pub-date>
<volume>87</volume>
<numero>1</numero>
<fpage>38</fpage>
<lpage>40</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-00522020000100038&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-00522020000100038&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-00522020000100038&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Presentamos las imágenes de gammagrafía de una paciente de 17 años de edad con sospecha de recidiva de osteosarcoma en el tercio distal de la tibia derecha después de cinco años de estar en vigilancia. Para confirmar la recurrencia, se decidió efectuar una gammagrafía y posteriormente un SPECT/CT empleando el radiofármaco Tc99m-sestamibi. En las imágenes se evidenció incremento anormal de actividad metabólica a nivel de la meseta tibial derecha sugiriendo actividad tumoral, dichos hallazgos se corroboraron mediante histopatología, la cual confirmó el diagnóstico de osteosarcoma convencional.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: We present scintigraphic images of a 17-year-old female patient with suspected osteosarcoma recurrence in the distal third of the right tibia, after five years of being under surveillance. To confirm recurrence, it was decided to carry out a scintigraphy and later a SPECT / CT using the Tc99m-sestamibi radiopharmaceutical. Images showed abnormal increase metabolic activity at the level of the right tibial plateau suggesting tumor activity. Histopathology confirmed the diagnosis of osteosarcoma.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Osteosarcoma]]></kwd>
<kwd lng="es"><![CDATA[gammagrafía]]></kwd>
<kwd lng="es"><![CDATA[SPECT/CT]]></kwd>
<kwd lng="es"><![CDATA[Tc99m-sestamibi]]></kwd>
<kwd lng="en"><![CDATA[Osteosarcoma]]></kwd>
<kwd lng="en"><![CDATA[scintigraphy]]></kwd>
<kwd lng="en"><![CDATA[SPECT/CT]]></kwd>
<kwd lng="en"><![CDATA[Tc99m-sestamibi]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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