Fig. 15From: Diffuse smoking-related lung diseases: insights from a radiologic-pathologic correlationRB-ILD. a Axial CT image depicts diffuse, ill-defined centrilobular nodules. Due to deteriorating symptoms, the patient underwent lung biopsy. b Excess numbers of alveolar macrophages (arrows) with light brown granules filling the cytoplasm, in a predominant centriacinar location; mild interstitial lymphocytic infiltrate (H&E, × 100)Back to article page