FIGURE 1.

High-resolution computed tomography (HRCT) and chest radiograph findings with simple clinical course. a) 8 months prior to admission, subpleural reticulation and honeycomb structure are present, compatible with fibrotic interstitial lung disease. b) Chest images on admission. Newly developed bilateral and diffuse ground-glass opacities (GGO) and underlying subpleural honeycomb and reticulation are seen on HRCT. c) Chest images before discharge. GGO has improved. Below, the clinical course is shown. Numbers show clinical days from second vaccination. BAL: bronchoalveolar lavage; mPSL: methylprednisolone.