Fig. 4.

Type 2 pattern. A 45-year-old male patient presenting with persistent fever for 4 days. a Initial axial thin-section CT images (day 5 after onset of symptom, January 21, 2020) showed a small region of subpleural GGO in bilateral lung lobe, (b) follow-up CT on day 10 (January 26, 2020) showed increased number and extent of GGO in bilateral lung lobes, (c) follow-up CT on day 15 (January 31, 2020) showed progression of disease with decreased extent and density of opacities, (d) follow-up CT on day 19 (February 4, 2020) showed reduced focal attenuation with residual linear opacities