Influenza A (H1N1) pneumonia: HRCT findings
OBJECTIVE: To describe aspects found on HRCT scans of the chest in patients infected with the influenza A (H1N1) virus. METHODS: We retrospectively analyzed the HRCT scans of 71 patients (38 females and 33 males) with H1N1 infection, confirmed through laboratory tests, between July and September of 2009. The HRCT scans were interpreted by two thoracic radiologists independently, and in case of disagreement, the decisions were made by consensus. RESULTS: The most common HRCT findings were ground-glass opacities (85%), consolidation (64%), or a combination of ground-glass opacities and consolidation (58%). Other findings were airspace nodules (25%), bronchial wall thickening (25%), interlobular septal thickening (21%), crazy-paving pattern (15%), perilobular pattern (3%), and air trapping (3%). The findings were frequently bilateral (89%), with a random distribution (68%). Pleural effusion, when observed, was typically minimal. No lymphadenopathy was identified. CONCLUSIONS: The most common findings were ground-glass opacities and consolidations, or a combination of both. Involvement was commonly bilateral with no axial or craniocaudal predominance in the distribution. Although the major tomographic findings in H1N1 infection are nonspecific, it is important to recognize such findings in order to include infection with the H1N1 virus in the differential diagnosis of respiratory symptoms.
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Sociedade Brasileira de Pneumologia e Tisiologia
2013
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oai:scielo:S1806-371320130003003232013-10-08Influenza A (H1N1) pneumonia: HRCT findingsAmorim,Viviane BrandaoRodrigues,Rosana SouzaBarreto,Miriam MennaZanetti,GlauciaHochhegger,BrunoMarchiori,Edson Pneumonia, viral Tomography, X-ray computed Influenza A virus, H1N1 subtype OBJECTIVE: To describe aspects found on HRCT scans of the chest in patients infected with the influenza A (H1N1) virus. METHODS: We retrospectively analyzed the HRCT scans of 71 patients (38 females and 33 males) with H1N1 infection, confirmed through laboratory tests, between July and September of 2009. The HRCT scans were interpreted by two thoracic radiologists independently, and in case of disagreement, the decisions were made by consensus. RESULTS: The most common HRCT findings were ground-glass opacities (85%), consolidation (64%), or a combination of ground-glass opacities and consolidation (58%). Other findings were airspace nodules (25%), bronchial wall thickening (25%), interlobular septal thickening (21%), crazy-paving pattern (15%), perilobular pattern (3%), and air trapping (3%). The findings were frequently bilateral (89%), with a random distribution (68%). Pleural effusion, when observed, was typically minimal. No lymphadenopathy was identified. CONCLUSIONS: The most common findings were ground-glass opacities and consolidations, or a combination of both. Involvement was commonly bilateral with no axial or craniocaudal predominance in the distribution. Although the major tomographic findings in H1N1 infection are nonspecific, it is important to recognize such findings in order to include infection with the H1N1 virus in the differential diagnosis of respiratory symptoms. info:eu-repo/semantics/openAccessSociedade Brasileira de Pneumologia e TisiologiaJornal Brasileiro de Pneumologia v.39 n.3 20132013-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-37132013000300323en10.1590/S1806-37132013000300009 |
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Amorim,Viviane Brandao Rodrigues,Rosana Souza Barreto,Miriam Menna Zanetti,Glaucia Hochhegger,Bruno Marchiori,Edson |
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Amorim,Viviane Brandao Rodrigues,Rosana Souza Barreto,Miriam Menna Zanetti,Glaucia Hochhegger,Bruno Marchiori,Edson Influenza A (H1N1) pneumonia: HRCT findings |
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Amorim,Viviane Brandao Rodrigues,Rosana Souza Barreto,Miriam Menna Zanetti,Glaucia Hochhegger,Bruno Marchiori,Edson |
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Amorim,Viviane Brandao |
title |
Influenza A (H1N1) pneumonia: HRCT findings |
title_short |
Influenza A (H1N1) pneumonia: HRCT findings |
title_full |
Influenza A (H1N1) pneumonia: HRCT findings |
title_fullStr |
Influenza A (H1N1) pneumonia: HRCT findings |
title_full_unstemmed |
Influenza A (H1N1) pneumonia: HRCT findings |
title_sort |
influenza a (h1n1) pneumonia: hrct findings |
description |
OBJECTIVE: To describe aspects found on HRCT scans of the chest in patients infected with the influenza A (H1N1) virus. METHODS: We retrospectively analyzed the HRCT scans of 71 patients (38 females and 33 males) with H1N1 infection, confirmed through laboratory tests, between July and September of 2009. The HRCT scans were interpreted by two thoracic radiologists independently, and in case of disagreement, the decisions were made by consensus. RESULTS: The most common HRCT findings were ground-glass opacities (85%), consolidation (64%), or a combination of ground-glass opacities and consolidation (58%). Other findings were airspace nodules (25%), bronchial wall thickening (25%), interlobular septal thickening (21%), crazy-paving pattern (15%), perilobular pattern (3%), and air trapping (3%). The findings were frequently bilateral (89%), with a random distribution (68%). Pleural effusion, when observed, was typically minimal. No lymphadenopathy was identified. CONCLUSIONS: The most common findings were ground-glass opacities and consolidations, or a combination of both. Involvement was commonly bilateral with no axial or craniocaudal predominance in the distribution. Although the major tomographic findings in H1N1 infection are nonspecific, it is important to recognize such findings in order to include infection with the H1N1 virus in the differential diagnosis of respiratory symptoms. |
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Sociedade Brasileira de Pneumologia e Tisiologia |
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2013 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-37132013000300323 |
work_keys_str_mv |
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