Pectus Excavatum
Nowak (1936) traced pectus excavatum in 2 to 4 generations in 12 families; a generation was skipped in 5 families. Stoddard (1939) reported an extensively affected family with a pattern consistent with autosomal dominant inheritance. This deformity also occurs in the Marfan syndrome and some other hereditary disorders. Leung and Hoo (1987) reported 3 Chinese families in each of which there were several instances of pectus excavatum. Male-to-male transmission was seen.