<?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>2183-1351</journal-id>
<journal-title><![CDATA[Acta Radiológica Portuguesa]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Radiol Port]]></abbrev-journal-title>
<issn>2183-1351</issn>
<publisher>
<publisher-name><![CDATA[Sociedade Portuguesa de Radiologia e Medicina Nuclear]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2183-13512022000100029</article-id>
<article-id pub-id-type="doi">10.25748/arp.25613</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Solitary Fibrous Tumor of the Breast: A Rare Case]]></article-title>
<article-title xml:lang="pt"><![CDATA[Tumor Fibroso Solitário da Mama: Um Caso Raro]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Teixeira]]></surname>
<given-names><![CDATA[Sofia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flor-de-Lima]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cardoso]]></surname>
<given-names><![CDATA[António]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Madureira]]></surname>
<given-names><![CDATA[António]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Hospitalar Tondela-Viseu Serviço de Radiologia ]]></institution>
<addr-line><![CDATA[Viseu ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Hospitalar Universitário de São João Serviço de Radiologia ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro Hospitalar Universitário de São João Centro de Mama ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidade do Porto Faculdade de Medicina ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>34</volume>
<numero>1</numero>
<fpage>29</fpage>
<lpage>31</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2183-13512022000100029&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2183-13512022000100029&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2183-13512022000100029&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract A solitary fibrous tumor (SFT) is a rare neoplasm often found in the pleura. Breast SFT is extremely rare, with just a few cases reported in the literature. The 49-year-old woman presented with a palpable lump in right breast. Mammography revealed an oval circumscribed mass which on ultrasound corresponded to a well-defined hypoechoic nodule. The imaging findings are not pathognomonic, therefore definitive diagnosis requires histological examination and immune-histochemical analysis. Histologically, neoplastic cells may adopt spindle to ovoid morphology, and the growth pattern is variable. In the immune-histochemical study, the tumor cells are characterized by strong and diffuse positivity for CD34 and STAT-6. In conclusion, breast SFT is rare. Histology may show overlapping characteristics with other conditions, with STAT-6 being a sensitive and specific marker that makes the definitive diagnosis. Surgical resection is the gold standard treatment. Although most have a benign and indolent clinical course, long-term follow-up is recommended.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo O tumor fibroso solitário (TFS) é uma neoplasia rara, frequentemente encontrada na pleura. O TFS mamário é extremamente raro, com escassos casos relatados na literatura. Mulher de 49 anos com nódulo palpável na mama direita. A mamografia revelou uma massa oval circunscrita, que na ecografia correspondia a nódulo hipoecóico bem definido. Os achados de imagem são inespecifícos e o diagnóstico definitivo requer análise histológica e imuno-histoquímica. Histologicamente, as células neoplásicas podem adotar morfologia fusiforme a ovoide, e o padrão de crescimento é variável. Na imuno-histoquímica, as células tumorais mostram positividade forte e difusa para CD34 e STAT-6. Em conclusão, o TFS da mama é raro. A histologia pode mostrar características de sobreposição com outros tumores, sendo o STAT-6 um marcador sensível e específico que permite o diagnóstico definitivo. A ressecção cirúrgica é o tratamento gold standard. Embora a maioria tenha um curso clínico benigno e indolente, o acompanhamento a longo prazo é recomendado.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Breast]]></kwd>
<kwd lng="en"><![CDATA[Solitary fibrous tumor]]></kwd>
<kwd lng="en"><![CDATA[Benign tumor.]]></kwd>
<kwd lng="pt"><![CDATA[Mama]]></kwd>
<kwd lng="pt"><![CDATA[Tumor fibroso solitário]]></kwd>
<kwd lng="pt"><![CDATA[Tumor benigno.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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