Skin cancer is the most common cancer in the United States, with about 9,500 people diagnosed each day. Physicians find 3 million instances of skin cancer annually and the number has grown steadily over the past 40 years. Central Illinois residents are encouraged to register for a free skin cancer screening from 5 - 7 p.m., Tuesday, May 20, at Simmons Cancer Institute (SCI) at SIU Medicine, 315 W. Carpenter St., Springfield. Dermatologists will perform free consultations to screen for the most common types of skin cancer: squamous cell carcinoma and basal cell carcinoma. Physicians will