[Pulmonary alveolar microlithiasis in two siblings].

The study of two brothers with pulmonary alveolar microlithiasis (MLA) a rare lung alteration with autosomic recessive character is presented. In one case the lung biopsy made the diagnosis by the identification of multiple calcospherites. The importance of the familiar study is stressed, as a sister with the same radiographic image was discovered this way. The literature is revised and the main data of MLA are presented; the radiologic images and histopathologic findings are commented.