PT - JOURNAL ARTICLE AU - Alia S. Al-Alawi TI - Familial occurrence of pulmonary alveolar microlithiasis in 3 siblings DP - 2006 Feb 01 TA - Saudi Medical Journal PG - 238--240 VI - 27 IP - 2 4099 - http://smj.org.sa/content/27/2/238.short 4100 - http://smj.org.sa/content/27/2/238.full SO - Saudi Med J2006 Feb 01; 27 AB - Pulmonary alveolar microlithiasis (PAM) is a rare disease of unknown etiology characterized by intra-alveolar calcium deposits. More than 500 cases were reported in the literature. The disorder affects people at every age beginning from the early childhood. It occurs probably as a result of autosomal recessive transmission. Familial occurrence is often found with family history of the disease being present in up to 50% of the reported cases. We report PAM in 3 siblings.