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Science Olympiad» Disease Detectives Event » National Event Exercises
Skin Cancer Module: Practice Exercises

Module 11, Solar Radiation Exposure Graphs

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How the Incidence of Skin Cancer Depends on the Pattern (short bursts or over a long period of time) and the Amount of Exposure

This picture consists of two graphs:

The first graph shows how the risk of three different skin cancers changes if the pattern remains constant but the amount of sun you get increases. In all three cases, melanoma (CMM), basal cell carcinoma (BCC), and squamous cell carcinoma (SCC), an increase in sun exposure leads to increased incidence of skin cancer.

The second graph shows how the risk of different skin cancers changes if the pattern changes but exposure to UV rays remains the same. The incidence of BCC and the incidence of CMM increase when the pattern of sun exposure changes from more continuous to more intermittent, but the incidence of SCC remains the same regardless of exposure pattern.

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This page last reviewed August 27, 2004

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