Familial atypical multiple mole-melanoma syndrome.

A family is described showing concordance for malignant melanoma and a cutaneous phenotype characterised by multiple large moles of variable size and colour (reddish-brown to bright red) with pigmentary leakage. Transmission of the cutaneous phenotype in the subject family, and in several others currently under investigation, shows an inheritance pattern consistent with a simple autosomal dominant factor. This cutaneous phenotype signifying melanoma risk may now be added to an increasing body of knowledge dealing with cancer-related genodermatoses.