A multi-center study (n=101) of the
relationship between chest CT findings and the clinical conditions of
coronavirus disease (COVID-19) pneumonia — published ahead-of-print and
open-access in the American Journal of Roentgenology (AJR) —
determined that most patients with COVID-19 pneumonia have ground-glass
opacities (GGO) (86.1%) or mixed GGO and consolidation (64.4%) and vascular
enlargement in the lesion (71.3%).
In addition,
lead authors Wei Zhao, Zheng Zhong, and colleagues revealed that lesions present
on CT images were more likely to have peripheral distribution (87.1%) and
bilateral involvement (82.2%) and be lower lung predominant (54.5%) and
multifocal (54.5%).
Zhao, Zhong, et
al. collected their 101 cases of COVID-19 pneumonia across four institutions in
China’s Hunan province, comparing clinical characteristics and imaging features
between two groups: nonemergency (mild or common disease) and emergency (severe
or fatal disease).
Accordingly,
most of the cohort (70.2%) were 21-50 years old, and most patients (78.2%) had
fever as the onset symptom. Only five patients showed disease associated with a
family outbreak.
While the
emergency group patients were older than the patients in the nonemergency
group, the rate of underlying disease was not significantly different in the
two groups — suggesting that viral load could be a better reflection of the
severity and extent of COVID-19 pneumonia.
As Zhao and
Zhong explained further: “Architectural distortion, traction bronchiectasis,
and pleural effusions, which may reflect the viral load and virulence of
COVID-19, were statistically different between the two groups and may help us
to identify the emergency type disease.”
The authors of
this AJR article also noted that CT involvement score can help evaluate the
severity and extent of COVID-19 pneumonia.
Journal article: https://www.ajronline.org/doi/10.2214/AJR.20.22976
Source: https://myfusimotors.com/2020/03/12/chest-ct-findings-in-coronavirus-disease-covid-19-pneumonia/
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