<?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>2444-054X</journal-id>
<journal-title><![CDATA[Cirugía y cirujanos]]></journal-title>
<abbrev-journal-title><![CDATA[Cir. cir.]]></abbrev-journal-title>
<issn>2444-054X</issn>
<publisher>
<publisher-name><![CDATA[Academia Mexicana de Cirugía A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2444-054X2022000800075</article-id>
<article-id pub-id-type="doi">10.24875/ciru.22000298</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Appendiceal neuroendocrine neoplasia: analysis of 50 patients]]></article-title>
<article-title xml:lang="es"><![CDATA[Neoplasia neuroendocrina apendicular: análisis de 50 pacientes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Terzio&#287;lu]]></surname>
<given-names><![CDATA[Serdar G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[K&#305;l&#305;ç]]></surname>
<given-names><![CDATA[Murat Ö.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Öksüz]]></surname>
<given-names><![CDATA[P&#305;nar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gürer]]></surname>
<given-names><![CDATA[Ahmet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Ankara City Hospital Department of General Surgery ]]></institution>
<addr-line><![CDATA[Ankara ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Eskisehir City Hospital Department of Surgical Oncology ]]></institution>
<addr-line><![CDATA[Eskisehir ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Ankara City Hospital Department of Pathology ]]></institution>
<addr-line><![CDATA[Ankara ]]></addr-line>
<country>Turkey</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>90</volume>
<fpage>75</fpage>
<lpage>80</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2444-054X2022000800075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2444-054X2022000800075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2444-054X2022000800075&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: The objective of this study was to investigate the clinical, surgical, and pathological findings of appendiceal neuroendocrine neoplasms (ANNs).  Materials and methods: The demographic, clinical, surgical, and pathological characteristics of 50 patients with ANN were analyzed. The patients were also classified as Group 1 (&lt; 40 years, n = 37) and Group 2 (&#8805; 40 years, n = 13), and compared each other in terms of all parameters.  Results: Acute appendicitis was the pre-operative clinical presentation in 48 (96%) patients. Appendectomy (94%) was the most common surgical procedure. Mean tumor size was 8.6 mm (1-70 mm). Approximately half of the tumors (46%) were T1. There was no lymphatic and distant metastasis. The patients in Group 2 (15.4 mm) had a higher mean tumor size than patients in Group 1 (6.3 mm) (p &lt; 0.001). The two groups were similar in other characteristics (p &gt; 0.05).  Conclusions: ANNs are usually diagnosed after histopathological evaluation due to the lack of specific clinicoradiological signs. Therefore, carefull intraoperative examination of appendectomy specimens may increase the possibility of suspecting these tumors. The results also showed that ANNs were bigger in patients above 40-years-old. Although not statistically significant, ANNs tended to have higher grade and to be more located at the base of the appendix in this group of patients.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: Investigar los hallazgos clínicos, quirúrgicos y patológicos de las neoplasias neuroendocrinas (RNA) apendiculares.  Método: Se analizaron las características demográficas, clínicas, quirúrgicas y patológicas de 50 pacientes con RNA. Los pacientes también fueron clasificados como Grupo 1 (&lt; 40 años, n = 37) y Grupo 2 (&#8805; 40 años, n = 13), y se compararon entre sí en términos de todos los parámetros.  Resultados: La apendicitis aguda fue la presentación clínica preoperatoria en 48 (96%) pacientes. La apendicectomía (94%) fue el procedimiento quirúrgico más común. El tamaño medio del tumor fue de 8,6 mm (1-70 mm). Aproximadamente la mitad de los tumores (46%) eran T1. No hubo metástasis linfáticas ya distancia. Los pacientes del Grupo 2 (15.4 mm) tenían un tamaño tumoral medio mayor que los pacientes del Grupo 1 (6.3 mm) (p &lt; 0.001). Los dos grupos fueron similares en otras características (p &gt; 0.05).  Conclusiones: Las RNA suelen diagnosticarse tras evaluación histopatológica debido a la falta de signos clínico-radiológicos específicos. Por lo tanto, el examen intraoperatorio cuidadoso de las muestras de apendicectomía puede aumentar la posibilidad de sospechar estos tumores. Los resultados también mostraron que las ANN eran más grandes en pacientes mayores de 40 años. Aunque no estadísticamente significativas, las ANN tendieron a tener mayor grado y estar más ubicadas en la base del apéndice en este grupo de pacientes.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Appendix]]></kwd>
<kwd lng="en"><![CDATA[Carcinoid tumor]]></kwd>
<kwd lng="en"><![CDATA[Neuroendocrine neoplasia]]></kwd>
<kwd lng="es"><![CDATA[Apéndice]]></kwd>
<kwd lng="es"><![CDATA[Tumor carcinoide]]></kwd>
<kwd lng="es"><![CDATA[Neoplasia neuroendocrina]]></kwd>
</kwd-group>
</article-meta>
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