<?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>0028-3746</journal-id>
<journal-title><![CDATA[Neumología y cirugía de tórax]]></journal-title>
<abbrev-journal-title><![CDATA[Neumol. cir. torax]]></abbrev-journal-title>
<issn>0028-3746</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Neumología y Cirugía de Tórax; Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas; Sociedad Cubana de Neumología; Sociedad Paraguaya de Neumología; Sociedad Boliviana de Neumología.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0028-37462020000200071</article-id>
<article-id pub-id-type="doi">10.35366/94630</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hallazgos tomográficos en afectación pulmonar por COVID-19, experiencia inicial en el Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México]]></article-title>
<article-title xml:lang="en"><![CDATA[CT findings in COVID-19 lung disease, initial experience at Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Juárez-Hernández]]></surname>
<given-names><![CDATA[Fortunato]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Benítez]]></surname>
<given-names><![CDATA[Marina Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hurtado-Duarte]]></surname>
<given-names><![CDATA[Alda Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Varela]]></surname>
<given-names><![CDATA[Randall]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Farías-Contreras]]></surname>
<given-names><![CDATA[Juan Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pensado Piedra]]></surname>
<given-names><![CDATA[Lya Edith]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández Moralesa]]></surname>
<given-names><![CDATA[Aloisia Paloma]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sotelo Robledo]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez Penagos]]></surname>
<given-names><![CDATA[Julio César]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>79</volume>
<numero>2</numero>
<fpage>71</fpage>
<lpage>77</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0028-37462020000200071&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0028-37462020000200071&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0028-37462020000200071&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  La pandemia por SARS-CoV-2 es un importante problema de salud pública a nivel mundial, con altas tasas de morbimortalidad. La tomografía computarizada es fundamental en el proceso diagnóstico dada su alta sensibilidad.  Objetivo:  Describir los hallazgos tomográficos en la afectación pulmonar por COVID-19.  Material y métodos:  Estudio transversal analítico. Pacientes atendidos en el Instituto Nacional de Enfermedades Respiratorias, Ciudad de México, con definición operacional vigente de caso sospechoso para COVID-19, que contaran con prueba de RT-PCR específica y tomografía computarizada de tórax en la valoración inicial. Se realizó un análisis descriptivo y analítico mediante la prueba de &#967;2 y t de Student. Se empleó el programa Epi-Info versión 7.  Resultados:  Se analizaron 56 pacientes, con una edad promedio de 51 años, 61% fue del sexo masculino. 52% presentaron comorbilidades, siendo la diabetes mellitus la más frecuente. Los síntomas que principalmente se observaron fueron fiebre, tos y cefalea. El patrón tomográfico que predominó fue mixto, con localización subpleural y bilateral.  Conclusión:  El espectro tomográfico pulmonar de la población estudiada se caracterizó por dos patrones principales: tipo mixto (áreas de consolidación con vidrio deslustrado) y empedrado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  The SARS-CoV-2 pandemic is a major public health problem worldwide, with high morbidity and mortality rates. Computed tomography (CT) is essential in the diagnostic process given its high sensitivity.  Objective:  To describe the tomographic findings in COVID-19 lung involvement.  Material and methods:  Analytical cross-sectional study. Patients attended at the INER, CDMX, with a current operational definition of a suspected case for COVID-19, who had a specific RT-PCR test and chest CT in the initial evaluation. A descriptive and analytical analysis was performed using the Student&#8217;s &#967;2 and t tests. The Epi-Info version 7 program was used.  Results:  56 patients were analyzed, with an average age of 51 years, 61% were male. 52% presented comorbidities, with diabetes mellitus being the most frequent. The symptoms that were mostly observed were fever, cough and headache. The tomographic pattern that predominated was mixed, with a subpleural and bilateral location.  Conclusion:  The pulmonary tomographic spectrum of the studied population was characterized by two main patterns: mixed type (areas of ground glass consolidation) and crazy paving.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Neumonía viral]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[tomografía computarizada]]></kwd>
<kwd lng="es"><![CDATA[INER]]></kwd>
<kwd lng="en"><![CDATA[Pneumonia viral]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[computed tomography]]></kwd>
<kwd lng="en"><![CDATA[INER]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A pneumonia outbreak associated with a new coronavirus of probable bat origin]]></article-title>
<source><![CDATA[Nature]]></source>
<year>2020</year>
<volume>579</volume>
<numero>7798</numero>
<issue>7798</issue>
<page-range>270-3</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="">
<collab>World Health Organization</collab>
<source><![CDATA[Director General&#8217;s remarks at the media briefing on 2019-nCoV on 11 February 2020]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="">
<collab>World Health Organization</collab>
<source><![CDATA[Coronavirus disease (COVID-19) Situation dashboard]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Weinstock]]></surname>
<given-names><![CDATA[MB]]></given-names>
</name>
<name>
<surname><![CDATA[Echenique]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Russell]]></surname>
<given-names><![CDATA[JW]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chest X-ray findings in 636 ambulatory patients with COVID-19 presenting to an urgent care center: a normal chest X-ray is no a guarantee]]></article-title>
<source><![CDATA[JUCM]]></source>
<year>2020</year>
<page-range>13-8</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Franquet]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Imaging of pulmonary viral pneumonia]]></article-title>
<source><![CDATA[Radiology]]></source>
<year>2011</year>
<volume>260</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>18-39</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jung]]></surname>
<given-names><![CDATA[HK]]></given-names>
</name>
<name>
<surname><![CDATA[Lim]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Choe]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Choi S-]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Sung]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Do K-]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Radiographic and CT features of viral pneumonia]]></article-title>
<source><![CDATA[Radiographics]]></source>
<year>2018</year>
<volume>38</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>719-39</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salehi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Abedi]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Balakrishnan]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Gholamrezanezhad]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Coronavirus disease 2019 (COVID-19): A systematic review of imaging findings in 919]]></article-title>
<source><![CDATA[AJR Am J Roentgenol]]></source>
<year>2020</year>
<page-range>1-7</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pan]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Ye]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Sun]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Time course of lung changes on chest CT during recovery from coronavirus disease 2019 (COVID-19)]]></article-title>
<source><![CDATA[Radiology]]></source>
<year>2020</year>
<volume>295</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>715-21</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lu]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genomic characterization and epidemiology of 2019 novel coronavirus: implications for virus origins and receptor binding]]></article-title>
<source><![CDATA[Lancet]]></source>
<year>2020</year>
<volume>395</volume>
<numero>10224</numero>
<issue>10224</issue>
<page-range>565-74</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Shi]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pathological findings of COVID-19 associated with acute respiratory distress syndrome]]></article-title>
<source><![CDATA[Lancet Respir Med]]></source>
<year>2020</year>
<volume>8</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>420-2</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lee Ch-]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Chen R-]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[J-W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Altered p38 mitogen-activated protein kinase expression in different leukocytes with increment of immunosuppressive mediators in patients with severe acute respiratory syndrome]]></article-title>
<source><![CDATA[J Immunol]]></source>
<year>2004</year>
<volume>172</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>7841-7</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hansell]]></surname>
<given-names><![CDATA[DM]]></given-names>
</name>
<name>
<surname><![CDATA[Bankeir]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
<name>
<surname><![CDATA[MacMahon]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[McLoud]]></surname>
<given-names><![CDATA[TC]]></given-names>
</name>
<name>
<surname><![CDATA[Müller]]></surname>
<given-names><![CDATA[NL]]></given-names>
</name>
<name>
<surname><![CDATA[Remy]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fleischer society: glossary of terms for thoracic imaging]]></article-title>
<source><![CDATA[Radiology]]></source>
<year>2008</year>
<volume>246</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>697-722</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Ch]]></surname>
<given-names><![CDATA[Dong]]></given-names>
</name>
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Temporal changes of CT findings in 90 patients with COVI-19 pneumonia: a longitudinal study]]></article-title>
<source><![CDATA[Radiology]]></source>
<year>2020</year>
<volume>200843</volume>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
