[The diagnosis and therapy of 6 cases of pulmonary alveolar proteinosis].

6 cases of pulmonary alveolar proteinosis were presented. No symptom or physical finding is specific for diagnosis. The final diagnosis can only be documented by patho-morphological examination. PAS positive alcin blue negative lipoprotein in alveolar spaces is the characteristic finding. By using folley's catheter, the authors developed a modified method for pulmonary lavage, and 3 patients were treated effectively.