The differential diagnosis of bilateral nodular pulmonary consolidation with calcifications includes granulomatous infection, particularly tuberculosis. Calcification does not occur in primary tuberculosis but does occur in postprimary tuberculosis. Chronic fungal infections frequently calcify, but bacterial and pneumocystic infections are not usually associated with calcification. A neoplastic process, such as inflammatory myofibroblastic tumor (inflammatory pseudotumor) or a metastatic malignant tumor, can calcify.

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