Table 1. Adapted Proposed Reporting Language for CT Findings Related to COVID-19 used in the Hospital das Clínicas da Faculdade de Medicina da USP.

Appearance	Suggested reporting language
Typical	Imaging features are suggestive of pneumonia and viral etiology must be included in the etiological differential diagnosis, particularly COVID-19.
Indeterminate	Imaging features are nonspecific and can be found in a variety of infectious and non-infectious processes, including cases of viral pneumonia and COVID-19.
Atypical	Imaging features suggest pulmonary inflammation/infection, although its pattern is not usually reported in COVID-19 cases. Other etiological agents should be considered initially.
Negative for pneumonia	No CT findings suggestive of pulmonary inflammation/infection. Note: CT may be negative in some early stages of COVID-19.