PMC6348731_01
Computed tomography image course of case 1. (A) Consolidation outside the radiation field in the upper lobe on admission. (B) New consolidation was found in the left upper lobe one month after the end of steroid administration. (C) Consolidation was improved only by follow-up in 3 months.
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Chest CT showed consolidation outside the radiation field in the upper, middle, and lower lobes (Fig. 1A). However, one month later, new consolidation was noted in the left lung, leading to a diagnosis of relapsing organizing pneumonia (Fig. 1B). After a course of symptomatic treatment (because hypoxemia was not found), the shadow completely disappeared in 3 months (Fig. 1C).
PMC6348731_02
Computed tomography image course of case 2. (A) Consolidation was found outside of the radiation field in right lower lobe on admission. (B) Consolidation of the right lower lobe moved, and showed improvement 3 months later (black arrow). (C) Consolidation disappeared following symptomatic treatment in 5 months.
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Chest CT revealed consolidation outside the radiation field in the middle and lower lobes (Fig. 2A). The shadow continued to move, eventually crossing over to the other side, and completely disappeared in 5 months (Fig. 2B and C).