Pulmonary alveolar microlithiasis: quantitative approach by bone scintigraphy Pulmoner alveolar mikrolitiyazis: kemik sintigrafisi ile kantitatif yaklaşım

Pulmonary alveolar microlithiasis (PAM) is a rare idiopathic disease of unknown etiology and pathogenesis. PAM is characterized histopathologically by extensive intra-alveolar calcium and phosphate deposition throughout both lung parenchymas. None-invasive diagnosis of pulmonary calcification and ossification requires various imaging techniques, including chest radiography and computed tomography, while bone scintigraphy may play a role in the disease staging by quantitative analysis. In this report, we presented a quantitative assessment technique for calcified foci in lungs by means of relative density analysis in successive bone scintigraphies of a patient with PAM.