Every year a lot of people die due to melanoma skin cancer. Although being lethal, this cancer can be cured and its prognosis can be controlled if it is identified early. The thickness of the tumour often referred to as Breslow thickness, is a crucial factor in determining the stage of this cancer. Currently, I am studying the long-term trend of the Breslow thickness and the stage at which melanoma is first diagnosed. Understanding the various prognosis factors and properly identified stage can make a huge difference in its treatment, prevention and risk assessment.