Pseudocavitation sign at chest CT scan due to COVID-19 pneumonia: A report of 5 cases and literature review.
Radiol Case Rep
; 16(11): 3558-3564, 2021 Nov.
Article
in English
| MEDLINE | ID: covidwho-1412519
ABSTRACT
Coronavirus disease 2019 (COVID-19) pneumonia computed tomography imaging features have been described in detail in many studies. The pseudocavitation sign has not been described in the previous COVID-19 studies. We present chest computed tomography scans of 5 reverse transcriptase-polymerase chain reaction positive patients with COVID-19 pneumonia who has bare areas among pulmonary infiltrates. All 5 also had previous scans with similarly sized low attenuated areas in the same location prior to the addition of pulmonary infiltrates. The pre-existing cystic changes had become remarkable due to the contrast around them after the pulmonary infiltrates added. Therefore, they should be termed as "pseodocavity" according to Fleischner Society glossary. Small air-containing spaces between pulmonary infiltrates have been termed in previous COVID-19 studies as a new sign called "round cystic changes/air bubble sign/vacuolar sign." We would like to draw attention that the vacuolar sign and the synonyms may be the pseudocavity sign that is due to pre-existing changes rather than a new defined sign.
Air bubble sign; COVID-19; COVID-19, novel coronavirus disease 2019; CT, computed tomography; ER, emergency room; GGO, ground-glass opacification; ICU, intensive care unit; Novel coronavirus disease 2019; Pseudocavitation; RT-PCR, reverse transcriptase-polymerase chain reaction; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; Vacuolar sign; WHO, World Health Organization
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Type of study:
Case report
/
Reviews
Language:
English
Journal:
Radiol Case Rep
Year:
2021
Document Type:
Article
Affiliation country:
J.radcr.2021.08.034
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