PMC5805844_01
High resolution chest tomography (HRCT) images of patient's lungs showing diffuse small airway thickening with cylindrical bronchiectasis. Diffuse bilateral fine ground glass opacities and diffuse tree-in-bud nodularity.
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A Chest high-resolution computed axial tomography (HRCT) was performed and displayed fine ground glass opacities bilaterally with small airways thickening and diffuse tree in bud nodularity (Fig. 1).
Histopathologic features of Right lower lobe Cryo-biopsies. Anthracotic pigment accumulating along alveolar septae. Carbon-laden macrophages and carbon pigment deposition around the terminal bronchioles.
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Biopsy revealed prominent anthracosis (Fig. 2).