X-ray
What are the main causes of pulmonary calcified nodules?
Histoplasmosis, healed varicella pneumonia, pneumoconioses, hamartoma, metastatic disease and pulmonary alveolar microlithiasis.
Multiple bilateral pulmonary calcified micronodules, predominantly in the upper and posterior zones. Note the tendency toward coalescence of the nodules in both pulmonary superior lobes.