xanthoma(n = noun.state) - a skin problem marked by the development (on the eyelids and neck and back) of irregular yellow nodules; sometimes attributable to disturbances of cholesterol metabolism;
is a kind of disease of the skin, skin disease, skin disorder
has particulars: xanthelasma, xanthoma disseminatum, cholesterosis cutis, lipid granulomatosis, lipoid granulomatosis, xanthoma multiplex, xanthomatosis

   A skin disease marked by the development or irregular yellowish patches upon the skin, especially upon the eyelids; -- called also xanthelasma. [1913 Webster]

xanthoma, n. (pl. xanthomas or xanthomata) Med.
1 a skin disease characterized by irregular yellow patches.
2 such a patch.

Etymology:
as XANTHIC + -OMA

xanthoma disseminatum, xanthoma multiplex