Fig. 1 Patient's imaging:  A/ chest X-ray with diffuse bilateral opacities, predominant in the upper lobes,  B and C/ chest computed tomography (CCT) with diffuse centrilobular micronodules, respecting subpleural, fissural and peribronchovascular spaces (parenchymal and bone windows respectively),  D/ CCT (mediastinal window) showing calcified tracheobronchial tree  E/ bone scan with bilateral lung fixation. Fig. 1