[Alveolar microlithiasis in children. Contribution of bronchoalveolar lavage].

This case of pulmonary alveolar microlithiasis emphasizes the rarity of the disease and its exceptional diagnosis in infants which relies on the pulmonary pathologic study. Besides allowing for diagnosis, the study of the alveolar brushing fluid permitted to describe for the first time pictures of post-necrotic cellular calcification which is probably responsible for the disease.