<?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>2312-3893</journal-id>
<journal-title><![CDATA[Revista Virtual de la Sociedad Paraguaya de Medicina Interna]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. virtual Soc. Parag. Med. Int.]]></abbrev-journal-title>
<issn>2312-3893</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Paraguaya de Medicina Interna]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2312-38932026000100308</article-id>
<article-id pub-id-type="doi">10.18004/rvspmi/2312-3893/2026.e13142608</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Carcinoma papilar de tiroides con estroma tipo desmoide (fibromatosis-like)]]></article-title>
<article-title xml:lang="en"><![CDATA[Papillary thyroid carcinoma with desmoid-like stroma (fibromatosis-like)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González González]]></surname>
<given-names><![CDATA[Nelson Rodrigo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas Scheffer]]></surname>
<given-names><![CDATA[Laura]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Balbuena]]></surname>
<given-names><![CDATA[Lilian Vanesa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Ministerio de Salud Pública y Bienestar Social Hospital Nacional Servicio de Endocrinología y Metabolismo]]></institution>
<addr-line><![CDATA[Itauguá ]]></addr-line>
<country>Paraguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Ministerio de Salud Pública y Bienestar Social Instituto Nacional del Cáncer Servicio de Anatomía Patológica]]></institution>
<addr-line><![CDATA[Areguá ]]></addr-line>
<country>Paraguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2026</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2026</year>
</pub-date>
<volume>13</volume>
<numero>1</numero>
<fpage>308</fpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_arttext&amp;pid=S2312-38932026000100308&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_abstract&amp;pid=S2312-38932026000100308&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_pdf&amp;pid=S2312-38932026000100308&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El carcinoma de tiroides es la neoplasia endócrina más frecuente con varios subtipos histológicos, siendo el carcinoma papilar el más común. Se presenta caso de mujer de 48 años que fue intervenida quirúrgicamente por una tumoración en región infrahioidea de 18 años de evolución, cuyo diagnóstico anatomopatológico final fue el de un carcinoma papilar con estroma tipo desmoide (fibromatosis-like), que representa un raro subtipo de carcinoma papilar.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Thyroid carcinoma is the most common endocrine neoplasm with several histological subtypes, papillary carcinoma being the most common. We present the case of a 48-year-old woman who underwent surgery for an 18-year-old tumor in the infrahyoid region, whose final pathological diagnosis was papillary carcinoma with desmoid-like stroma (fibromatosis-like), which represents a rare subtype of papillary carcinoma.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[carcinoma papilar]]></kwd>
<kwd lng="es"><![CDATA[&#946;-catenina]]></kwd>
<kwd lng="es"><![CDATA[neoplasias de la tiroides]]></kwd>
<kwd lng="en"><![CDATA[papillary carcinoma]]></kwd>
<kwd lng="en"><![CDATA[&#946;-catenin]]></kwd>
<kwd lng="en"><![CDATA[thyroid neoplasms]]></kwd>
</kwd-group>
</article-meta>
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