Chest CT Scan Classification in COVID-19
COVID-19 typically presents with ground glass opacification (GGO) with or without consolidation in a peripheral, posterior, and diffuse or lower lung zone distribution. GGO has also been frequently reported to have round morphology or a “crazy paving” pattern.
Other pathologies resulting in peripheral opacities, and should be considered in COVID-19, include:
- Viral pneumonitidies
- Organising pneumonia
- Eosinophilic pneumonia
- UIP/NSIP
- Alveolar Sarcoid
- Contusions
- Pulmonary Infarcts
British Society of Thoracic Imaging (BSTI) guidelines (attached below) and Radiological Society of North America (RSNA) guidelines (also attached below) have published a classification system for COVID-19 on Chest CT scan. This table compares the two systems.
Chest CT Scan Classification in COVID-19
COVID-19 typically presents with ground glass opacification (GGO) with or without consolidation in a peripheral, posterior, and diffuse or lower lung zone distribution. GGO has also been frequently reported to have round morphology or a “crazy paving” pattern.
Other pathologies resulting in peripheral opacities, and should be considered in COVID-19, include:
- Viral pneumonitidies
- Organising pneumonia
- Eosinophilic pneumonia
- UIP/NSIP
- Alveolar Sarcoid
- Contusions
- Pulmonary Infarcts
British Society of Thoracic Imaging (BSTI) guidelines (attached below) and Radiological Society of North America (RSNA) guidelines (also attached below) have published a classification system for COVID-19 on Chest CT scan. This table compares the two systems.
Resources
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Thoracic Imaging in COVID-19 Infection (BSTI)
Guidance for the Reporting Radiologist British Society of Thoracic Imaging
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RSNA Expert Consensus Statement on Reporting Chest CT Findings Related to COVID-19
The goal of this expert consensus is to help radiologists recognize findings of COVID-19 pneumonia and aid their communication with other healthcare providers, assisting management of patients during this pandemic.
