In conclusion, CT findings of patients with mild COVID-19 outside of Wuhan include predominance of GGO in the early phase with an increase in the frequency of consolidation and linear opacities over the 3 weeks post onset of symptoms. A small percentage of patients can have no or minimal CT abnormalities. Given that laboratory tests for the novel coronavirus can be falsely negative, radiologists play a key role in identifying suspicious CT findings based on time interval from the onset of symptoms and guide further evaluation and management of patients.