“…However, polycystic kidneys in infants and children also can be classified into those that are nonsyndromal and syndromal (Table I). Syndromal PKD occurs in tuberous sclerosis [Bernstein et al, 1986;Kandt et al, 19921, von Hippel Lindau syndrome [Lamiell et al, 19801, oro-facial-digital syndrome type I [Kennedy et al, 1991;Salinas et al, 19911, and overlap connective tissue disorder (OCTD) [Somlo et al, 19931. PKD has also been reported in 2 cases of Ehlers-Danlos syndrome [Lewitus, 1956;Imahori et al, 19691. "Adult" PKD has been reported in one patient [Rosenmann et al, 19771, and cystic kidneys have been reported in 4 others with Hajdu-Cheney syndrome, which is inherited as an autosomal dominant trait. The Hajdu-Cheney acroosteolysis syndrome [Cheney, 1965;Matisonn and Ziady, 1973;Williams, 1977;Herrmann et al, 1973;Gilula et al, 1976;Kawamura et al, 1991;Kemp et al, 1986;Udell et al, 1986;Kaler et al, 1990;Pellegrini and Widdowson, 19911 mainly involves the skeleton.…”