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Figure Legends
Figure 1. Clinical course of P/F (the ratio of arterial oxygen partial pressure to fractional inspired oxygen) and LDH (IU/l). Black triangle: the day of intubation. Black square: the day of extubation. Day 1 was set as the initiation of steroid pulse therapy.
Figure 2. Computed tomography of the chest during the clinical course in case 1. It showed bilateral peripheral ground glass opacities on day 11 (on admission). These opacities progressed to SOP, showing consolidation with traction bronchiectasis and volume loss on day 19 (the day steroid pulse therapy was started). Patient almost recovered from these findings on day 61.