<?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>S2183-13512021000200009</article-id>
<article-id pub-id-type="doi">10.25748/arp.22421</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Preditores de Sobrevivência e Margens Cirúrgicas Positivas em Doentes com Adenocarcinoma Ductal do Pâncreas: um Estudo Retrospetivo num Único Centro]]></article-title>
<article-title xml:lang="en"><![CDATA[Predictors of Survival and Positive Surgical Margins in Pancreatic Ductal Adenocarcinoma: a Single Center Retrospective Study]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ribeiro]]></surname>
<given-names><![CDATA[Rita]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Amorim]]></surname>
<given-names><![CDATA[João]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A4"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lamas]]></surname>
<given-names><![CDATA[Nuno Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A5"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carvalho]]></surname>
<given-names><![CDATA[João]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Giesteira]]></surname>
<given-names><![CDATA[Bruno]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[França]]></surname>
<given-names><![CDATA[Manuela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A7"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade do Minho Escola de Medicina ]]></institution>
<addr-line><![CDATA[Braga ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Hospitalar Universitário do Porto Serviço de Radiologia Departamento de Imagiologia]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade do Minho Escola de Medicina Instituto de Investigação em Ciências da Vida e Saúde (ICVS)]]></institution>
<addr-line><![CDATA[Braga ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Laboratório Associado do Governo PT ICVS/3B&#8217;s ]]></institution>
<addr-line><![CDATA[Braga/Guimarães ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Centro Hospitalar Universitário do Porto Serviço de Anatomia Patológica Departamento de Patologia]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidade do Porto Instituto de Ciências Biomédicas de Abel Salazar ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Universidade do Porto Instituto de Investigação e Inovação em Saúde i3S]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>33</volume>
<numero>2</numero>
<fpage>9</fpage>
<lpage>14</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2183-13512021000200009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2183-13512021000200009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2183-13512021000200009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo 24. Introdução: O adenocarcinoma ductal do pâncreas é uma das principais causas de morte por cancro. Apresenta uma baixa sobrevivência mesmo na pequena proporção de doentes submetidos a cirurgia. O objetivo deste estudo foi avaliar o valor da TC pré- operatória na previsão do envolvimento das margens cirúrgicas e identificar características imagiológicas preditoras de sobrevivência nos doentes com adenocarcinoma pancreático ressecável. 25. Métodos: Foram avaliados retrospetivamente 62 doentes com adenocarcinoma pancreático confirmado histologicamente e submetidos a ressecção cirúrgica entre 1 de janeiro de 2010 e 30 de junho de 2019. Os registos clínicos e as TC pré-operatórias foram revistos para recolha de dados clínicos e imagiológicos. Os dados foram avaliados com o teste do Qui- quadrado e regressão logística binária. A análise de sobrevivência realizou-se com recurso ao método de Kaplan-Meier, ao teste de Log-Rank e à regressão de Cox. 26. Resultados: Dos 62 doentes incluídos no estudo, identificaram-se 35 com margens negativas e 27 com margens positivas. Na análise multivariada, o contacto vascular revelou- se preditor de margens cirúrgicas positivas. A sobrevivência média foi de 26,3 meses, sendo significativamente diferente entre os grupos com margens positivas e negativas. Na análise de sobrevivência, a densidade tumoral na TC (HR=0,985, p-value=0,035) e sinais imagiológicos sugestivos de envolvimento perineural extra-pancreático (HR=2,324, p-value=0,048) foram identificados como preditores de sobrevivência. 27. Conclusão: A TC pré-operatória é uma ferramenta útil na previsão das margens cirúrgicas positivas e sobrevivência, podendo ajudar na identificação de doentes com tumores ressecáveis com pior prognóstico que possam beneficiar de outras estratégias terapêuticas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract 32. Introduction: Pancreatic ductal adenocarcinoma is one of the most common causes of cancer- related death. The overall survival is short even in the small proportion of patients who are eligible for surgical resection. The aims of our study were to assess the value of preoperative CT scan in the prediction of the surgical margin status and to identify imaging features that predict the survival of patients with resectable pancreatic adenocarcinoma. 33. Methods: Our study included 62 patients with histologically confirmed pancreatic adenocarcinoma, who underwent surgery between January 1st 2010 and June 30th 2019. Medical records and preoperative CT images were reviewed in order to collect clinical and imaging data. Data was analyzed with the Chiquare test and binary logistic regression. Kaplan-Meier estimates, Log-Rank test, and multivariate Cox proportional hazards regression were used for the survival analysis. Results: From the 62 patients who underwent surgery, negative surgical margins were achieved in 35 of them and 27 patients had positive surgical margins. In the multivariate analysis, vascular contact was a predictor of positive surgical margins. The mean survival was 26,3 months, being significantly different between the two groups of surgical margins. In survival analysis, tumor density on CT (HR=0,985, p-value=0,035) and imaging signs of extra- pancreatic perineural involvement (HR=2,324, p-value=0,048) were identified as predictors of survival. 34. Conclusion: Preoperative CT is a useful tool to predict positive surgical margins and survival. It helps to identify patients with resectable tumors but worse prognosis who can benefit from different therapeutic strategies.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Pâncreas]]></kwd>
<kwd lng="pt"><![CDATA[Análise de sobrevivência]]></kwd>
<kwd lng="pt"><![CDATA[Tomografia computorizada.]]></kwd>
<kwd lng="en"><![CDATA[Pancreas]]></kwd>
<kwd lng="en"><![CDATA[Survival analysis]]></kwd>
<kwd lng="en"><![CDATA[Computer tomography.]]></kwd>
</kwd-group>
</article-meta>
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