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A case showing GGO dynamic CT change in size increase and solid part growth. (A) GGO in the left upper lobe, measuring 8 mm in diameter, −544 HU in CT density. (B) Diameter grew to 14 mm and CT density increased to −365 after 3 months (with solid component growth from 1 to 3 mm in diameter). GGO, ground glass opacity; CT, computed tomography; HU, Hounsfield units.
