<?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>2565-005X</journal-id>
<journal-title><![CDATA[Gaceta mexicana de oncología]]></journal-title>
<abbrev-journal-title><![CDATA[Gac. mex. oncol.]]></abbrev-journal-title>
<issn>2565-005X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Oncología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2565-005X2021000500028</article-id>
<article-id pub-id-type="doi">10.24875/j.gamo.20000146</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Carcinoma anaplásico de tipo sarcomatoide de tiroides: utilidad de biomarcadores en el diagnóstico de un caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Sarcomatoid anaplastic thyroid carcinoma: usefulness of biomarkers in the diagnosis of a case]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Ríos]]></surname>
<given-names><![CDATA[Ricardo D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castañeda-Martínez]]></surname>
<given-names><![CDATA[Juan M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Ascencio]]></surname>
<given-names><![CDATA[Luis E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gamboa-Jiménez]]></surname>
<given-names><![CDATA[Tania I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Rentería]]></surname>
<given-names><![CDATA[Claudia]]></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 Siglo XXI Hospital de Especialidades Sepúlveda Gutiérrez]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Centro Médico Nacional Siglo XXI Hospital de Especialidades Sepúlveda Gutiérrez]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Centro Médico Nacional Siglo XXI Hospital de Especialidades Sepúlveda Gutiérrez]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</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>20</volume>
<fpage>28</fpage>
<lpage>32</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2565-005X2021000500028&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2565-005X2021000500028&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2565-005X2021000500028&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El carcinoma anaplásico de tiroides es un tumor poco frecuente de tiroides. Reportamos el caso de una mujer de 60 años en la que la biopsia por aspiración con aguja fina se reportó como Bethesda II. Al ser discordante con hallazgos imagenológicos, clínicos y quirúrgicos, fue sometida a tiroidectomía total con disección extensa de cuello. El reporte final fue carcinoma anaplásico de tipo sarcomatoide, clasificado como T3bN1Mx, con Ki-67 del 80%, AE1/AE3, vimentina y peculiarmente positivo para tiroglobulina, también fue factor de transcripción tiroidea 1 negativo. La paciente está viva a 4 meses de la cirugía y 10 meses de los síntomas iniciales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Anaplastic thyroid carcinoma is an infrequent tumor of thyroid. We report the case of a 60-year-old woman in whom the fine-needle aspiration biopsy was reported as Bethesda II. The discordance between imaging, clinical and surgical findings resulted in the patient undergoing total thyroidectomy with neck dissection. The final pathology reported a sarcomatoid anaplastic thyroid carcinoma T3bN1Mx, Ki-67 80%, positive for AE1/AE3, vimentin and peculiarly thyroglobulin, also was negative for thyroid transcription factor-1. The patient was alive 4 months after the initial surgery and 10 months from the initial symptoms.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Anaplásico]]></kwd>
<kwd lng="es"><![CDATA[Sarcomatoide]]></kwd>
<kwd lng="es"><![CDATA[Tiroides]]></kwd>
<kwd lng="es"><![CDATA[Revisión de caso]]></kwd>
<kwd lng="en"><![CDATA[Anaplastic]]></kwd>
<kwd lng="en"><![CDATA[Sarcomatoid]]></kwd>
<kwd lng="en"><![CDATA[Thyroid]]></kwd>
<kwd lng="en"><![CDATA[Case review]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Neff]]></surname>
<given-names><![CDATA[RL]]></given-names>
</name>
<name>
<surname><![CDATA[Farrar]]></surname>
<given-names><![CDATA[WB]]></given-names>
</name>
<name>
<surname><![CDATA[Kloos]]></surname>
<given-names><![CDATA[RT]]></given-names>
</name>
<name>
<surname><![CDATA[Burman]]></surname>
<given-names><![CDATA[KD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anaplastic thyroid cancer]]></article-title>
<source><![CDATA[Endocrinol Metab Clin North Am]]></source>
<year>2008</year>
<volume>37</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>525-38</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[YY]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[YK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sarcomatoid carcinoma of the thyroid:Report of a subtype of anaplastic thyroid carcinoma]]></article-title>
<source><![CDATA[Tzu Chi Med J]]></source>
<year>2012</year>
<volume>24</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>209-11</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="">
<collab>Mexico. Fuente:Globocan 2018 [Internet]</collab>
<source><![CDATA[Organización Mundial de la Salud, Agencia Internacional para la Investigación en Cáncer]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<source><![CDATA[SEER Cancer Statistics Review, 1975-2013 [Internet]]]></source>
<year>2016</year>
<publisher-name><![CDATA[Bethesda:National Cancer Institute, Surveillance, Epidemiology, and End Results Program]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cabanillas]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
<name>
<surname><![CDATA[McFadden]]></surname>
<given-names><![CDATA[DG]]></given-names>
</name>
<name>
<surname><![CDATA[Durante]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Thyroid cancer]]></article-title>
<source><![CDATA[Lancet]]></source>
<year>2016</year>
<volume>388</volume>
<numero>10061</numero>
<issue>10061</issue>
<page-range>2783-95</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Giuffrida]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Gharib]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anaplastic thyroid carcinoma:current diagnosis and treatment]]></article-title>
<source><![CDATA[Ann Oncol]]></source>
<year>2000</year>
<volume>11</volume>
<page-range>1083-9</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Neff]]></surname>
<given-names><![CDATA[RL]]></given-names>
</name>
<name>
<surname><![CDATA[Farrar]]></surname>
<given-names><![CDATA[WB]]></given-names>
</name>
<name>
<surname><![CDATA[Kloos]]></surname>
<given-names><![CDATA[RT]]></given-names>
</name>
<name>
<surname><![CDATA[Burman]]></surname>
<given-names><![CDATA[KD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anaplastic thyroid cancer]]></article-title>
<source><![CDATA[Endocrinol Metab Clin North Am]]></source>
<year>2008</year>
<volume>37</volume>
<page-range>525-38</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ragazzi]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ciarrocchi]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Sancisi]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Gandolfi]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Bisagni]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Piana]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Update on anaplastic thyroid carcinoma:morphological, molecular, and genetic features of the most aggressive thyroid cancer]]></article-title>
<source><![CDATA[Int J Endocrinol]]></source>
<year>2014</year>
<volume>2014</volume>
<page-range>790834</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carcangiu]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
<name>
<surname><![CDATA[Steeper]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Zampi]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Rosai]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anaplastic thyroid carcinoma. A study of 70 cases]]></article-title>
<source><![CDATA[Am J Clin Pathol]]></source>
<year>1985</year>
<volume>83</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>135-58</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pernick]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<collab>Stains &amp;molecular markers</collab>
<article-title xml:lang=""><![CDATA[Cytokeratin AE1/AE3 [Internet]]]></article-title>
<source><![CDATA[PathologyOutlines.com website]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Krishna]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Diagnosis of metastatic neoplasms:an immunohistochemical approach]]></article-title>
<source><![CDATA[Arch Pathol Lab Med]]></source>
<year>2010</year>
<volume>134</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>207-15</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Deeken-Draisey]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[GY]]></given-names>
</name>
<name>
<surname><![CDATA[Gao]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Alexiev]]></surname>
<given-names><![CDATA[BA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anaplastic thyroid carcinoma:an epidemiologic, histologic, immunohistochemical, and molecular single-institution study]]></article-title>
<source><![CDATA[Hum Pathol]]></source>
<year>2018</year>
<volume>82</volume>
<page-range>140-8</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pan]]></surname>
<given-names><![CDATA[DH]]></given-names>
</name>
<name>
<surname><![CDATA[Wen]]></surname>
<given-names><![CDATA[DY]]></given-names>
</name>
<name>
<surname><![CDATA[Luo]]></surname>
<given-names><![CDATA[YH]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[JQ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The diagnostic and prognostic values of Ki-67/MIB-1 expression in thyroid cancer:a meta-analysis with 6,051 cases]]></article-title>
<source><![CDATA[Onco Targets Ther]]></source>
<year>2017</year>
<volume>10</volume>
<page-range>3261-76</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Casterline]]></surname>
<given-names><![CDATA[PF]]></given-names>
</name>
<name>
<surname><![CDATA[Jaques]]></surname>
<given-names><![CDATA[DA]]></given-names>
</name>
<name>
<surname><![CDATA[Blom]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Wartofsky]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anaplastic giant and spindle-cell carcinoma of the thyroid:a different therapeutic approach]]></article-title>
<source><![CDATA[Cancer]]></source>
<year>1980</year>
<volume>45</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>1689-92</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
