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Images in a 65-year-old woman. (a) Transverse CT scan (1 mm section thickness) obtained at the level of division of right B6 shows consolidation in right middle lobe (arrow) and multiple nodules (arrowheads; KL-6, 400 U ml–1). (b) Transverse CT scan (1 mm section thickness) obtained 5 months later shows worsened consolidation (arrow) and unchanged nodules (arrowheads); however, the KL-6 level is not elevated (KL-6, 397 U ml–1).
