Melanoma, a cancer of the skin's melanocytes, or pigment cells, hits 60, 000 Americans each year and kills 8, 000 of them.

FORBES: Targeting Melanoma

Mongolian spots (technically named congenital dermal melanocytosis) are flat bluish-green, gray or light brown areas where cells called melanocytes have been trapped in a layer of the skin called the dermis.

CNN: What are Mongolian spots?