Sedaghatian congenital lethal metaphyseal chondrodysplasia--observations in a second Iranian family and histopathological studies.

In 1980, Sedaghatian described in two brothers and one sister a neonatally lethal disorder associated with slight rhizomelic limb shortness, mild platyspondyly, and severe metaphyseal dysplasia. Here data are presented on another Iranian infant with the Sedaghatian syndrome who died on day 4 and was found to have histologic evidence of severe epimetaphyseal dysplasia. The occurrence in children of both sexes in one instance, born to normal parents who were first cousins, and currently apparent confinement of the disorder to Iranians suggests that the Sedaghatian syndrome is an autosomal recessive trait with high gene frequency in Iranians. This may be a more complexly pleiotropic syndrome than suggested by the roentgenograms, since one of Sedaghatian's patients also had "microphthalmia, asymmetry of ears, depressed nasal bridge, broad nose, short neck, prominent sternum, and short lower extremities."