Does a mass in your abdomen cause one varicose vein in one of your legs?

Abdominal Veins/Mass: Varicose veins are due to malfunctioning valves (reflux) of the saphenous system of veins. It would be most unlikely for an abdominal mass to cause varicose veins unless the mass is large enough to cause blockage of the deep system of veins on the same side as the varicose veins. An abdominal mass may cause deep vein system problems but not varicose veins.

Mass: Possibly due to pressure what is the nature of the mass