Figure 1. Diffuse Calcification

Axial CT shows a completely calcified nodule, consistent with a granuloma.

Figure 2. Hamartoma--Chondroid Calcification

Coned frontal chest radiograph shows a left upper lobe nodule with chondroid (popcorn) calcification, characteristic of hamartomas.


Figure 3. Calcified Bronchogenic Carcinoma

Axial CT shows an irregularly-shaped nodule with eccentric calcification in the right lower lobe. Note that the mass is comprised of a substantial noncalcified component.

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