Fig. 2

Course of findings of interstitial pneumonia on chest computed tomography (CT). A At the diagnosis of dermatomyositis, B 2 months after initiation of treatment, C 8 months after initiation of treatment, and D 14 months after initiation of treatment (before bronchoscopy). On initial admission (A), interstitial shadows were observed just below the pleura in both lungs. At discharge 2 months later, the interstitial shadows temporarily improved (B). However, 8 months later (C), new ground-glass shadows appeared in both lungs. Fourteen months later (D), the ground-glass shadows were further aggravated, as indicated by the arrow