<?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>0301-696X</journal-id>
<journal-title><![CDATA[Revista de sanidad militar]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. sanid. mil.]]></abbrev-journal-title>
<issn>0301-696X</issn>
<publisher>
<publisher-name><![CDATA[Secretaría de la Defensa Nacional, Dirección General de Sanidad]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0301-696X2021000200003</article-id>
<article-id pub-id-type="doi">10.56443/rsm.v75i2.223</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Carcinoma neuroendocrino moderadamente diferenciado (carcinoide atípico) de cavidad nasal: Reporte de un caso y revisión del tema]]></article-title>
<article-title xml:lang="en"><![CDATA[Moderately differentiated neuroendocrine carcinoma of the nasal cavity, a case report and literature review]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Busto-Ruano]]></surname>
<given-names><![CDATA[José Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romo-Magdaleno]]></surname>
<given-names><![CDATA[Jorge Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora-Mendoza]]></surname>
<given-names><![CDATA[Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alanis-Nuñez]]></surname>
<given-names><![CDATA[Arturo Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Luna-Sánchez]]></surname>
<given-names><![CDATA[Marcela Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Santa Ana]]></surname>
<given-names><![CDATA[José Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Central Militar  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>75</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0301-696X2021000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0301-696X2021000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0301-696X2021000200003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los carcinomas neuroendocrinos son tumores poco frecuentes en nariz y senos paranasales. Se consideran tumores primitivos y son los menos diferenciados del sistema neuroendocrino difuso. Se discute el caso de una paciente femenina de 49 años quien acude al servicio de otorrinolaringología en el Hospital Central Militar refiriendo masa en cavidad nasal izquierda de crecimiento progresivo en un periodo de 9 meses, así como epistaxis y obstrucción nasal izquierda. Mediante resonancia magnética y tomografía computada se observó tumoración de la cavidad nasal izquierda en su totalidad hasta nasofaringe, con captación heterogénea del medio de contraste. Se decide resección de tumoración mediante abordaje endoscópico (sinusotomía maxilar tipo III, etmoidectomía anterior y posterior izquierda, Draf esfenoidal tipo II izquierdo, Draf IIa del seno frontal izquierdo, así como septectomía posterior). El estudio histopatológico reportó un carcinoma neuroendocrino moderadamente diferenciado, por lo que se trató de forma conjunta con servicio de oncología médica. Este tipo de tumores son un reto diagnostico por la complejidad para diferenciarlos en un estudio histopatológico. La diferenciación efectiva de los mismos puede tener un impacto clínico, por lo que los avances en la intervención terapéutica podrían prolongar la supervivencia del paciente, mejorar la calidad de vida e incluso la cura.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Neuroendocrine carcinomas are rare tumors of the nose and sinuses. They are considered primitive tumors and are the least differentiated from the diffuse neuroendocrine system. We report a 49-year-old female patient who attends the otolaryngology service at the Central Military Hospital referring mass in the left nasal cavity with a progressive growth over a period of 9 months, including epistaxis, as well as left nasal obstruction. Magnetic Resonance Imaging and Computed Tomography imaging studies showed a tumor occupying the entirety of the left nasal cavity to the nasopharynx, with heterogeneous uptake of the contrast medium. Tumor resection is decided by endoscopic approach (maxillary sinusotomy type III, left anterior and posterior ethmoidectomy, left sphenoid Draf type II, left frontal Draf IIa as well as posterior septectomy). The pathology service reported a moderately differentiated neuroendocrine carcinoma. The treatment was decided joint session with the medical oncology service. These types of tumors are a diagnostic challenge because of the complexity to differentiate them in a histopathological study. Their effective differentiation can have a clinical impact, that&#8217;s why the advances in therapeutic intervention could prolong patient survival, improve quality of life and even find a cure.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[carcinoma neuroendocrino]]></kwd>
<kwd lng="es"><![CDATA[neoplasias neuroendocrinas sinonasales]]></kwd>
<kwd lng="es"><![CDATA[tumores malignos nasosinusal]]></kwd>
<kwd lng="es"><![CDATA[senos paranasales]]></kwd>
<kwd lng="es"><![CDATA[cavidad nasal]]></kwd>
<kwd lng="en"><![CDATA[Neuroendocrine carcinoma]]></kwd>
<kwd lng="en"><![CDATA[sinonasal neuroendocrine neoplasm]]></kwd>
<kwd lng="en"><![CDATA[sinonasal malignant tumors]]></kwd>
<kwd lng="en"><![CDATA[sinuses]]></kwd>
<kwd lng="en"><![CDATA[nasal cavity]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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