COVID-19 pneumonia and the reversed halo sign

Farias, Lucas de Pádua Gomes de; Strabelli, Daniel Giunchetti; Sawamura, Márcio Valente Yamada

doi:10.36416/1806-3756/e20200131

Cited by 14 publications

(5 citation statements)

References 2 publications

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“…Therefore, clinical data and temporal correlation with radiological findings are extremely important, as well as correlation with previous examination findings. In addition to these findings, CT of patients with COVID-19 may also show signs of organizing pneumonia, reversed halo sign, reticular pattern, subpleural curvilinear lines, parenchymal bands, pseudocavities, and nodules, sometimes configuring the halo sign (17)(18)(19). Airway centered disease such as bronchial wall thickening, centrilobular and tree in bud opacities, pleural effusion, and lymphadenopathy are not frequently encountered at the initial presentation of COVID-19 (17).…”

Section: ' Chest Computed Tomographymentioning

confidence: 99%

Imaging findings in COVID-19 pneumonia

Farias

Fonseca

Strabelli

et al. 2020

Clinics

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The coronavirus disease , caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), emerged in Wuhan city and was declared a pandemic in March 2020. Although the virus is not restricted to the lung parenchyma, the use of chest imaging in COVID-19 can be especially useful for patients with moderate to severe symptoms or comorbidities. This article aimed to demonstrate the chest imaging findings of COVID-19 on different modalities: chest radiography, computed tomography, and ultrasonography. In addition, it intended to review recommendations on imaging assessment of COVID-19 and to discuss the use of a structured chest computed tomography report. Chest radiography, despite being a low-cost and easily available method, has low sensitivity for screening patients. It can be useful in monitoring hospitalized patients, especially for the evaluation of complications such as pneumothorax and pleural effusion. Chest computed tomography, despite being highly sensitive, has a low specificity, and hence cannot replace the reference diagnostic test (reverse transcription polymerase chain reaction). To facilitate the confection and reduce the variability of radiological reports, some standardizations with structured reports have been proposed. Among the available classifications, it is possible to divide the radiological findings into typical, indeterminate, atypical, and negative findings. The structured report can also contain an estimate of the extent of lung involvement (e.g., more or less than 50% of the lung parenchyma). Pulmonary ultrasonography can also be an auxiliary method, especially for monitoring hospitalized patients in intensive care units, where transfer to a tomography scanner is difficult.

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Section: ' Chest Computed Tomographymentioning

confidence: 99%

Imaging findings in COVID-19 pneumonia

Farias

Fonseca

Strabelli

et al. 2020

Clinics

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“…(2) Entretanto, outros achados tomográficos podem estar presentes na COVID-19, como o sinal do halo invertido, o sinal do alvo e, finalmente, achados de embolia pulmonar. (3)(4)(5)(6) Pelo que sabemos, este é o segundo relato na literatura internacional de um caso de paciente com COVID-19 com padrão de infiltrado pulmonar migratório, compatível com pneumonia em organização (PO), que apresentou boa e rápida resposta ao tratamento com corticoide. (7) Paciente do sexo feminino, 47 anos de idade e com diagnóstico de linfoma folicular foi reavaliada no 33º dia de sintomas relacionados à COVID-19.…”

Section: Ao Editorunclassified

Migratory pulmonary infiltrates in a patient with COVID-19 and lymphoma

et al. 2021

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“…It quickly spread to other countries and was declared a pandemic in March 2020 by the WHO. The etiologic agent identified was a coronavirus (SARS-CoV-2) and the infection was respectively called Coronavirus 2019 disease (COVID-19) 13 .…”

Section: Sars Virus Historymentioning

confidence: 99%

“…Figure 8. Chest CT with window to lung parenchyma in different views, (A) coronal; (B) sagittal (C and D) axial showing inverted halo sign (Source: Farias et al13 ).…”

mentioning

confidence: 99%

Análise comparativa sobre as alterações radiológicas ocasionadas pelos vírus SARS-CoV E SARS-CoV-2: uma revisão de literatura

Loureiro

Brito

Borges

et al. 2021

Rev. Med. (São Paulo)

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No final de 2019 um novo coronavírus denominado SARS-CoV-2 surgiu em Wuhan, na China e foi responsável por uma pandemia com repercussões sem precedentes. Entretanto, sabe-se que há cerca de 20 anos, em 2002, o país teve uma epidemia de outro coronavírus, o SARS-CoV, sendo que seus portadores apresentaram quadro clínico muito semelhante aos infectados pelo novo vírus. Além da clínica, a apresentação radiológica, de maneira geral, também é similar. Dessa forma, o presente estudo tem como objetivo a análise e comparação das alterações radiológicas presentes em ambas as infecções, bem como a produção científica acerca desses achados, por meio de uma revisão da literatura. A busca pelo referencial teórico ocorreu em agosto de 2020 por meio das bases de dados da Scielo, Medscape e PubMed, além de protocolos médicos. Após aplicação dos critérios de inclusão e exclusão foram selecionados vinte e um artigos que atenderam o objetivo da pesquisa e cinco protocolos. As alterações radiológicas do SARS-CoV e SARS-CoV-2 são, de forma geral, semelhantes, embora, há algumas diferenças, em relação a virulência e ao grau de progressão do acometimento pulmonar. Quanto ao melhor método de imagem, a radiografia pode se sobressair como uma ferramenta mais barata e acessível, levando em consideração a sobrecarga dos serviços de saúde no contexto de uma pandemia mundial.

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COVID-19 pneumonia and the reversed halo sign

Cited by 14 publications

References 2 publications

Imaging findings in COVID-19 pneumonia

Imaging findings in COVID-19 pneumonia

Migratory pulmonary infiltrates in a patient with COVID-19 and lymphoma

Análise comparativa sobre as alterações radiológicas ocasionadas pelos vírus SARS-CoV E SARS-CoV-2: uma revisão de literatura

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