Pulmonary alveolar microlithiasis
Severe dyspnea. Her physician suspected interstitial lung disease.
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Numerous sand-like calcifications throughout the lungs predominantly in mid & lower zones sparing the kung apices with subpleural and peribronchial distribution, crazy paving patten, calcified interlobular septa and black pleura sign
Small right apical bulla.
Dilated main pulmonary artery.
Increased cardiac size with mild pericardial effusion.
Scanned upper abdominal cuts revealed hepatomegaly and mild abdominal ascites.
Pulmonary alveolar microlithiasis (PAM) is a rare idiopathic condition characterised by widespread intra-alveolar deposition of spherical calcium phosphate microliths