Evidence map›Paper›PMID 32861461›Full record

SynthesisClinical radiology2020

Chest CT findings in asymptomatic cases with COVID-19: a systematic review and meta-analysis.

M Tsikala Vafea, E Atalla, M Kalligeros, E K Mylona, F Shehadeh, E Mylonakis

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Clinical radiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  9. Asia Oceania journal of nuclear medicine & biology · 2022
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  12. Pulmonary Findings of [Pathogens (Basel, Switzerland) · 2021
    Article
  13. Antibody and viral RNA kinetics in SARS-CoV2 infected patients admitted to a Romanian University Hospital of Infectious Diseases.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

M Tsikala VafeaInfectious Diseases Division, Warren Alpert Medical School of Brown University, Providence, RI, USA.
E AtallaInfectious Diseases Division, Warren Alpert Medical School of Brown University, Providence, RI, USA.
M KalligerosInfectious Diseases Division, Warren Alpert Medical School of Brown University, Providence, RI, USA.
E K MylonaInfectious Diseases Division, Warren Alpert Medical School of Brown University, Providence, RI, USA.
F ShehadehInfectious Diseases Division, Warren Alpert Medical School of Brown University, Providence, RI, USA.
E MylonakisInfectious Diseases Division, Warren Alpert Medical School of Brown University, Providence, RI, USA. Electronic address: emylonakis@lifespan.org.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo determine the overall rate of chest imaging findings in asymptomatic cases, describe the most common patterns found, and determine the rate of later symptom development in these initially asymptomatic cases. MATERIALS AND

methodsThe PubMed and EMBASE databases were searched until 1 May 2020, for studies examining the proportion of positive chest imaging findings in asymptomatic cases diagnosed with COVID-19 and a random-effects meta-analysis of proportions was performed. Heterogeneity was assessed using the I

resultsAmong 858 non-duplicate studies, seven studies with a total of 231 asymptomatic cases met the inclusion criteria. In the primary analysis, the pooled estimate of the overall rate of positive chest computed tomography (CT) findings among asymptomatic cases was 63% (95% confidence interval [CI]: 44-78%). Among 155/231 cases that were followed up for later symptom development, 90/155 remained asymptomatic and 65/155 developed symptoms during the study period (that ranged between seven and 30 days of follow-up). The pooled estimate of the rate of positive chest CT findings was 62% (95% CI: 38-81%) in cases that remained asymptomatic, while it was 90% (95% CI: 49-99%) in cases that developed symptoms. Among CT findings, the pooled estimate of the overall rate of ground-glass opacities (GGO) at CT alone was 71% (95% CI: 50-86%). Among other CT findings reported, 22/231 patients had GGO with consolidation, 7/231 patients had stripe shadows with or without GGO, and 8/231 patients had GGO with interlobular septal thickening. Among initially asymptomatic cases with positive CT findings, the pooled estimate of the overall rate of later symptom development was 26% (95% CI: 14-43%).

conclusionIn COVID-19, asymptomatic cases can have positive chest CT findings, and COVID-19 should be considered among cases with CT abnormalities even when there are no other symptoms. There is a need for close clinical monitoring of asymptomatic cases with radiographic findings as a significant percentage will develop symptoms.

Indexed as

Asymptomatic DiseasesCoronavirus InfectionsCOVID-19Databases, FactualDisease Transmission, InfectiousFemaleHumansIncidenceInfection ControlMalePandemicsPneumonia, ViralRadiography, ThoracicRisk AssessmentSevere Acute Respiratory SyndromeTomography, X-Ray Computed

Identifiers

PMID32861461
PMCPMC7420957

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.