<?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>0016-3813</journal-id>
<journal-title><![CDATA[Gaceta médica de México]]></journal-title>
<abbrev-journal-title><![CDATA[Gac. Méd. Méx]]></abbrev-journal-title>
<issn>0016-3813</issn>
<publisher>
<publisher-name><![CDATA[Academia Nacional de Medicina de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0016-38132020000500396</article-id>
<article-id pub-id-type="doi">10.24875/gmm.20000376</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Comportamiento tomográfico de la neumonía causada por SARS-CoV-2]]></article-title>
<article-title xml:lang="en"><![CDATA[Tomographic behavior of pneumonia caused by SARS-CoV-2]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Concha-Rebollar]]></surname>
<given-names><![CDATA[Luis A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Izquierdo-Echávarri]]></surname>
<given-names><![CDATA[Eva A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alva-López]]></surname>
<given-names><![CDATA[Luis F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ayala-Ochoa]]></surname>
<given-names><![CDATA[Francisco J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Melchor]]></surname>
<given-names><![CDATA[Vito S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Médica Sur Departamento de Imagenología ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Medicina Departamento de Fisiología]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2020</year>
</pub-date>
<volume>156</volume>
<numero>5</numero>
<fpage>396</fpage>
<lpage>404</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-38132020000500396&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-38132020000500396&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-38132020000500396&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: Desde el primer reporte de la enfermedad respiratoria causada por SARS-Cov-2 a finales de 2019, en Wuhan, China, hasta el 8 de junio de 2020, habían sido afectadas 6 931 000 personas en el mundo y 113 619 en México, donde se carece de informes que describan el comportamiento tomográfico de esta enfermedad a lo largo de su evolución y su correlación con los datos clínicos del paciente.  Objetivo: Identificar, describir y clasificar las manifestaciones en las imágenes de tomografía de tórax de pacientes con neumonía causada por SARS-CoV-2.  Método: Se incluyeron pacientes hospitalizados con infección por SARS-CoV-2 confirmada mediante PCR-TR y en quienes se realizó tomografía simple de tórax.  Resultados: Los patrones tomográficos más comunes fueron opacidad de vidrio despulido, consolidación, empedrado y patrón mixto, con distribución periférica, subpleural y afectación bilateral hasta en 95 %. Se identificaron bandas subpleurales que distorsionaban la arquitectura hasta en 62 % de los pacientes, con un promedio de siete días de evolución. El aumento del eje transverso de la arteria pulmonar constituyó el hallazgo extrapulmonar más frecuente.  Conclusión: Conocer el comportamiento de este tipo de neumonía permite la familiarización con los patrones tomográficos característicos, con el fin de coadyuvar a la detección y tratamiento oportunos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: From the first report of the respiratory disease caused by SARS-Cov-2 towards the end of 2019, in Wuhan, China, to June 8, 2020, 6,931,000 people had been affected in the world, and 113,619 in Mexico, where there is a lack of literature describing the tomographic behavior of this disease throughout its evolution and its correlation with patient clinical data.  Objective: To identify, describe and classify the manifestations detected on chest computed tomography images of patients with pneumonia caused by SARS-CoV-2.  Method: Hospitalized patients with RT-PCR-confirmed SARS-CoV-2 infection and who underwent a plain chest tomography were included.  Results: The most common tomographic patterns were ground glass opacity, consolidation, cobblestone pattern and mixed pattern, with peripheral and subpleural distribution and bilateral involvement in up to 95 %. Subpleural bands that distorted the architecture were identified in up to 62 % of patients, with an average of seven days of evolution. The most common extrapulmonary finding was an increase in pulmonary artery transverse axis.  Conclusion: Knowing the behavior of this type of pneumonia allows becoming familiarized with the characteristic tomographic patterns, in order to aid timely detection and treatment.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Neumonía causada por coronavirus]]></kwd>
<kwd lng="es"><![CDATA[Covid-19]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[Hallazgos por tomografía]]></kwd>
<kwd lng="en"><![CDATA[Pneumonia caused by coronavirus]]></kwd>
<kwd lng="en"><![CDATA[Covid-19]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[Tomographic findings]]></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[Hosseiny]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kooraki]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Gholamrezanezhad]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Reddy]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Myers]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Radiology perspective of coronavirus disease 2019 (COVID-19):lessons from severe acute respiratory syndrome and Middle East respiratory syndrome]]></article-title>
<source><![CDATA[AJR Am Roentgenol]]></source>
<year>2020</year>
<volume>214</volume>
<page-range>1078-82</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="">
<collab>World Health Organization</collab>
<source><![CDATA[Coronavirus disease (COVID-19) weekly epidemiological update and weekly operational update]]></source>
<year>2020</year>
<publisher-loc><![CDATA[Suiza ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zu]]></surname>
<given-names><![CDATA[ZY]]></given-names>
</name>
<name>
<surname><![CDATA[Jiang]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[PP]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Ni]]></surname>
<given-names><![CDATA[QQ]]></given-names>
</name>
<name>
<surname><![CDATA[Lu]]></surname>
<given-names><![CDATA[GM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Coronavirus disease 2019 (COVID-19):a perspective from China]]></article-title>
<source><![CDATA[Radiology]]></source>
<year>2020</year>
<volume>296</volume>
<page-range>E15-25</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</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[Ye]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Sun]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Gui]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Liang]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Time course of lung changes at chest CT during recovery from coronavirus disease 2019 (COVID-19)]]></article-title>
<source><![CDATA[Radiology]]></source>
<year>2020</year>
<volume>295</volume>
<page-range>715-21</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[Peña]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Dennie]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Veinot]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Muñiz]]></surname>
<given-names><![CDATA[SH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pulmonary hypertension:how the radiologist can help]]></article-title>
<source><![CDATA[Radiographics]]></source>
<year>2012</year>
<volume>32</volume>
<page-range>9-32</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[Wang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Dong]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Ren]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Temporal changes of CT findings in 90 patients with COVID-19 pneumonia:a longitudinal study]]></article-title>
<source><![CDATA[Radiology]]></source>
<year>2020</year>
<volume>296</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>E55-64</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[Yuan]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Yin]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Tao]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Tan]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Association of radiologic findings with mortality of patients infected with 2019 novel coronavirus in Wuhan, China]]></article-title>
<source><![CDATA[PLoS One]]></source>
<year>2020</year>
<volume>15</volume>
</nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ruan]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Jiang]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Song]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical predictors of mortality due to COVID-19 based on an analysis of data of 150 patients from Wuhan, China]]></article-title>
<source><![CDATA[Intensive Care Med]]></source>
<year>2020</year>
<volume>46</volume>
<page-range>846-8</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Smithuis]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Smithuis]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[32 cases of suspected COVID-19]]></article-title>
<source><![CDATA[Imaging findings and follow up [En línea]]]></source>
<year>2020</year>
<publisher-loc><![CDATA[Países Bajos ]]></publisher-loc>
<publisher-name><![CDATA[Radiology Assistant]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Spagnolo]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Balestro]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Aliberti]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Cocconcelli]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Biondini]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Casa]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pulmonary fibrosis secondary to COVID-19: a call to arms?]]></article-title>
<source><![CDATA[Lancet Respir Med]]></source>
<year>2020</year>
<volume>8</volume>
<page-range>750-2</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[Lomoro]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Verde]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Zerboni]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Simonetti]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Borghi]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Fachinetti]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[COVID-19 pneumonia manifestations at the admission on chest ultrasound, radiographs, and CT: single-center study and comprehensive radiologic literature review]]></article-title>
<source><![CDATA[Eur J Radiol Open]]></source>
<year>2020</year>
<volume>7</volume>
<page-range>100231</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[Bikdeli]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Madhavan]]></surname>
<given-names><![CDATA[MV]]></given-names>
</name>
<name>
<surname><![CDATA[Jiménez]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Chuich]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Dreyfus]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Driggin]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[COVID-19 and thrombotic or thromboembolic disease:implications for prevention, antithrombotic therapy, and follow-up]]></article-title>
<source><![CDATA[J Am Coll Cardiol]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Inui]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Fujikawa]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Jitsu]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kunishima]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Watanabe]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Suzuki]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chest CT findings in cases from the cruise ship “Diamond Princess”with coronavirus disease 2019 (COVID-19)]]></article-title>
<source><![CDATA[Radiology:Cardiothoracic Imaging]]></source>
<year>2020</year>
<volume>2</volume>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
