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Walk the evidence base by book and chapter — the raw source passages that ground Ask, Differential, and the rest.
1 passage
Routine screening CT for the identification of COVID-19 pneumonia is currently not recommended by most radiology societies. We propose four categories for reporting CT imaging findings potentially attributable to COVID-19, each with suggested standardised language. The reporting language does not offer an exact likelihood for COVID-19 pneumonia, which depends on several factors including prevalence in a community, exposure, risk factors, and clinical presentation. Rather, the reporting language focuses on CT findings reported in the literature and the typicality of these features in COVID-19 pneumonia rather than other diseases. At this time, CT screening for the detection of COVID-19 is not recommended by most radiological societies. The true sensitivity and specificity of chest CT are unknown. Even patients with a normal chest CT or only atypical features may have COVID-19. Routine screening CT for diagnosis or exclusion of COVID-19 is currently not recommended by most professional organizations or the US Centers for Disease Control and Prevention.