<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Rizzo, Stefania</dc:creator>
  <dc:creator>Catanese, Carola</dc:creator>
  <dc:creator>Puligheddu, Carla</dc:creator>
  <dc:creator>Epistolio, Samantha</dc:creator>
  <dc:creator>Ramelli, Giulia</dc:creator>
  <dc:creator>Frattini, Milo</dc:creator>
  <dc:creator>Pereira Mestre, Ricardo</dc:creator>
  <dc:creator>Nadarajah, Navarajah</dc:creator>
  <dc:creator>Rezzonico, Ermidio</dc:creator>
  <dc:creator>Magoga, Francesco</dc:creator>
  <dc:creator>Milan, Lisa</dc:creator>
  <dc:creator>Del Grande, Filippo</dc:creator>
  <dc:creator>Giovanella, Luca</dc:creator>
  <dc:creator>Ceriani, Luca</dc:creator>
  <dc:date>2022</dc:date>
  <dc:description xmlns:ns0="xml" ns0:lang="en">Purpose: The main objective of this study was to assess the presence of pulmonary infltrates with computed tomography (CT) appearance compatible with infection by coronavirus disease 2019 (COVID-19), in Canton Ticino in the 2 months preceding the frst ofcial case. Secondary aims were to compare the classifcation of infltrates in the same time frame in 2020 and 2019; to compare the number of chest CT scans in the same period; to search for pathological confrmation of the virus. Materials and methods: Chest CT scans performed between January 1 and February 24 in 2019 and 2020 were collected and classifed by COVID-19 Reporting and Data System (CO-RADS). Pathological presence of the virus was searched for when appropriate material was available. Results: The fnal cohort included 881 patients. Among the CO-RADS 3 and 4 categories, 30 patients had pneumonitis of unknown etiology. Pathological specimens were available in six patients but they were negative for COVID-19. Conclusion: Before the frst ofcial case of COVID-19 infection, in Canton Ticino there were about 30 cases of pneumonitis of uncertain origin, with CT appearance compatible with infection by COVID-19, but with no confrmation of the disease. The number of chest CT scans in the frst two months of 2020 was &gt;12% compared to 2019.</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>https://n2t.net/ark:/12658/srd1325626</dc:identifier>
  <dc:identifier>https://susi.usi.ch/global/documents/325626</dc:identifier>
  <dc:identifier>https://susi.usi.ch/documents/325626/files/Rizzo_2022_Spri_RadiologiaMedica (1).pdf</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>info:eu-repo/semantics/altIdentifier/doi/10.1007/s11547-022-01466-9</dc:relation>
  <dc:relation>info:eu-repo/semantics/altIdentifier/ark/12658/srd1325626</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>CC BY</dc:rights>
  <dc:source>La radiologia medica. - 2022, vol. 127, p. 360–368</dc:source>
  <dc:subject xmlns:ns1="xml" ns1:lang="en">Pandemic</dc:subject>
  <dc:subject xmlns:ns2="xml" ns2:lang="en">COVID-19</dc:subject>
  <dc:subject xmlns:ns3="xml" ns3:lang="en">Computed tomography</dc:subject>
  <dc:subject xmlns:ns4="xml" ns4:lang="en">Canton Ticino</dc:subject>
  <dc:subject>info:eu-repo/classification/udc/61</dc:subject>
  <dc:title xmlns:ns5="xml" ns5:lang="en">CT evaluation of lung infiltrates in the two months preceding the Coronavirus disease 19 pandemic in Canton Ticino (Switzerland) : were there suspicious cases before the official first case?</dc:title>
  <dc:type>http://purl.org/coar/resource_type/c_6501</dc:type>
</oai_dc:dc>