A 27-year-old woman who worked in Wuhan, China presented to the hospital with a 4-day history of fever and cough. At admission, her body temperature was elevated to 38.5°C (101.3°F) and coarse breath sounds were heard during auscultation. Laboratory studies showed leucopenia, and positive sputum analysis using real-time reverse transcriptase fluorescence polymerase chain reaction confirmed infection by COVID-19 (formerly known as 2019 novel coronavirus [2019-nCoV]) (1,2). Noncontrast chest CTs obtained at admission and after 4 days of hospitalization (Figure) showed a right upper lobe nodule with ground-glass halo, which increased in size between studies, concurrently with the deterioration of clinical symptoms.