Fig. 1

Chest CT scan at different time-points. (A) Chest CT before treatment. Multiple high-density patchy shadows were observed in the middle and lower lung fields of both lungs, with air bronchogram, partial bronchiectasis and unclear lesion boundary. Small alveolar cavity was observed in the lesion of superior segment of right lower lobe. Calcification foci was absent. (B) Chest CT After 2 weeks of anti-infective treatment. The lesion was progressed, particularly in the basal segment of the left lower lobe as the focal point (arrow). The lesion on the right lung was absorbed and the patchy ground glass density shadow remained in the right lower lobe. (C) Chest CT in our hospital. Multiple patchy and rope-like high-density shadows were observed near the pleura in both lungs, with bronchial vapor phase visible, partial bronchiectasis and unclear lesion boundaries inside. New lesions can be observed in both lower lobe and left upper lung (arrow), while the lesion in the basal segment of the left lower lobe was absorbed (circle). (D) Chest CT after 10 days’ treatment combined of anti-TB and corticosteroid therapy. Multiple patchy and rope-like high-density shadows were observed in both lungs, with air bronchogram, partial bronchiectasis and unclear lesion boundaries. The lesion was slightly enlarged (arrow) and slightly absorbed in left lower lobe (circle). (E) Chest CT at the follow-up of two month. Multiple patchy and rope-like high-density shadows were observed in both lungs, but significantly improved compared with Fig. 1D(circle). A small localized ground-glass density shadow was observed in the lingual segment with unclear boundary(arrow). There was no specific abnormal density foci in the other lobe