RT Journal Article SR Electronic T1 Familial occurrence of pulmonary alveolar microlithiasis in 3 siblings JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 238 OP 240 VO 27 IS 2 A1 Al-Alawi, Alia S. YR 2006 UL http://smj.org.sa/content/27/2/238.abstract 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.