[Alveolar proteinosis in a facade plasterer. A sequential study of bronchoalveolar lavage and thoracic computerized tomography].

Alveolar proteinosis is a rare disease. We report a case occurring in a patient who smoked and was a facade plasterer who was treated with repeated pulmonary lavage. A mineral analysis of the lavage fluid recovered a significant amount of silica and iron oxide confirming the massive exposure of the patient to these minerals. The favourable outcome over the next 7 years was associated as regards respiratory function, with a progressive improvement in lung volumes and pulmonary output and of CO diffusion capacity, as regards broncho-alveolar lavage there was a regular increase in the cellularity and finally as regards CT scanning (at high resolution) there was a progressive clearing of the alveolar opacities only leaving the persistent opacities in the interstitium.