What's a difference (or there is no difference) between 2mm calcified pulmonary nodule which has not changed in size 2 to 3 years(stable) and 2mm pulmonary granuloma which has not changed in size 2 to 3 years(stable).thank you?

Features: A granulomatous lesion narrows the differential of a lung opacification. If there is mediastinal adenopathy, a node may be biopsied. TB screening test should be performed. If calcified, the lesion may indicate a resolved infection or process. Since the size is stable, this lessens the concern for a fast growing tumor or infection that is not controlled. The image may be uploaded-virtual consult HT