The description of increased lung attenuation (opacity), preservation of lung volume, and air bronchograms are classic CT features of alveolar consolidation. Interstitial lung disease typically shows reticular or nodular patterns, honeycombing, or ground-glass opacities, often with volume loss. Significant lung volume loss is characteristic of atelectasis. Pulmonary embolism can cause various findings, including wedge-shaped peripheral opacities (Hampton's hump) or normal findings, but not typically diffuse consolidation with preserved volume and air bronchograms.
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