[Clinical aspects and genetics of pseudoxanthoma elasticum].

Eighteen cases of Pseudoxantoma elasticum (PXE) were analysed using clinical and genetic criteria. We observed great intra- and interfamiliar variations in the manifestations of the disease as well as mono-, bi- and trisymptomatic cases (skin + eyes + vessels). We lack reliable indications for the existence of more than one recessive type of PXE and hence for heterogeneity. In family 9, PXE was inherited in an autosomal-dominant mode, and the discrete symptoms were restricted to the skin.