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### Clinical history

##

A 31-year old man presents at the emergency room with retrosternal discomfort. ECG and blood results came back negative. A chest X-ray was done to exclude a pulmonary origin.

### Radiological images

### Radiological findings

### CT images

### CT findings

### Extra Examinations

Bronchoscopy with bronchoalveolar lavage revealed an opaque fluid and high level of Ig G antibodies to GM-CSF (granulocyte-macrophage colony-stimulating-factor).

### Final diagnosis

Pulmonary alveolar proteinosis.

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