[Pulmonary alveolar microlithiasis in 2 Moroccan sisters].

The histories of two Moroccan sisters with pulmonary alveolar microlithiasis are described. Two years follow-up is available. The elder girl has no complaints, her two years younger sister becomes dyspnoeic on exercise. Pulmonary alveolar microlithiasis is a rare condition, which occurs mostly as a familiary disease. On pathologic examination characteristic calcifications are found in the alveoli. The radiographic picture of the chest is quite typical. A short review of the literature is presented.