Physical examination may reveal clubbing of the fingers or a bluish coloration of the skin as a result of decreased oxygen. A chest X-ray may show dense shadows similar to pulmonary edema. An arterial blood gases reveals low oxygen levels in the blood. Pulmonary function tests may show restrictive lung disease and abnormal diffusion. High-resolution CT scan of the chest may show dense bilateral infiltrates in the lungs Bronchoscopy with lavage (washing the lungs with saline) may show a milky fluid.
More information on pulmonary alveolar proteinosis
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