Fig. 1

Chest radiography and computed tomography findings. First visit to the previous hospital, 2 months before referral to our hospital (A). At the time of referral to our hospital, the reticular shadows were enlarged on chest radiography and the crazy paving appearance was enlarged and well-defined on chest computed tomography (B). One year later, the chest imaging findings have improved following the reduction and discontinuation of steroids and immunosuppressive agent and repeated total lung lavage under general anesthesia (C)