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1. Diffuse microcalcifications
This thoracic CT demonstrates pulmonary microcalcifications with a slight lower lobe predominance. This calcification pattern is frequently likened to the appearance of a “sandstorm.” The calcifications obscure the border of the heart and other mediastinal structures. Subpleural cyst formation (distinct from honeycombing) gives the appearance of a “black pleural line” and can occasionally be mistaken for a pneumothorax (1).
Which of the following diseases is least likely to be associated with pulmonary calcification? (Click on the correct answer to proceed to the next panel)