Bob Marley was a Jamaican superstar who introduced the world to the spirit of reggae music. His music often focused on the power of perseverance and hope, a message that he truly believed, as he faced his own deadly foe – cancer. Plastic surgeon Dr. Andrew Ordon explains how melanoma is the most lethal form of skin cancer, which arises from pigment cells and produces a darkish hue on the skin or, as in Marley’s case, under the nail bed.