Pulmonary alveolar proteinosis a rare disease.

Pulmonary alveolar proteinosis is a rare lung disease in which abnormal accumulation of surfactant occurs with in the alveoli, interfering with gas exchange. PAP can occur in a primary form or secondarily in the settings of malignancy , pulmonary infection, or environmental exposure to dusts or chemicals. Rare familial forms have also been recognized suggesting a genetic component . we are going to present a rare case of pulmonary alveolar proteinosis.