MILIARY CALCIFICATION ON CXR

healed pneumonia following tuberculosis, chickenpox or histoplasmosis

parasitic infection

haemosiderosis, eg. idiopathic pulmonary haemosiderosis, mitral stenosis (causes chronic pulmonary venous hypertension)

certain pneumoconioses, eg. silicosis, asbestosis, iron, tin, barium and talc

retained contrast medium, eg. post-bronchography, inhalation of barium

alveolar microlithiasis (very fine stippling; often familial; can obliterate all lung detail)

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