Radiographic features of COVID-19 based on an initial cohort of 96 patients in Singapore
Singapore medical journal
; : 458-465, 2021.
Article
in En
| WPRIM
| ID: wpr-920941
Responsible library:
WPRO
ABSTRACT
INTRODUCTION@#Chest radiographs (CXRs) are widely used for the screening and management of COVID-19. This article describes the radiographic features of COVID-19 based on an initial national cohort of patients.@*METHODS@#This is a retrospective review of swab-positive patients with COVID-19 who were admitted to four different hospitals in Singapore between 22 January and 9 March 2020. Initial and follow-up CXRs were reviewed by three experienced radiologists to identify the predominant pattern and distribution of lung parenchymal abnormalities.@*RESULTS@#In total, 347 CXRs of 96 patients were reviewed. Initial CXRs were abnormal in 41 (42.7%) out of 96 patients. The mean time from onset of symptoms to CXR abnormality was 5.3 ± 4.7 days. The predominant pattern of lung abnormality was ground-glass opacity on initial CXRs (51.2%) and consolidation on follow-up CXRs (51.0%). Multifocal bilateral abnormalities in mixed central and peripheral distribution were observed in 63.4% and 59.2% of abnormal initial and follow-up CXRs, respectively. The lower zones were involved in 90.2% of initial CXRs and 93.9% of follow-up CXRs.@*CONCLUSION@#In a cohort of swab-positive patients, including those identified from contact tracing, we found a lower incidence of CXR abnormalities than was previously reported. The most common pattern was ground-glass opacity or consolidation, but mixed central and peripheral involvement was more common than peripheral involvement alone.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Singapore
/
Radiography, Thoracic
/
Retrospective Studies
/
SARS-CoV-2
/
COVID-19
/
Lung
Type of study:
Observational_studies
Limits:
Humans
Country/Region as subject:
Asia
Language:
En
Journal:
Singapore medical journal
Year:
2021
Type:
Article