Early-stage prostate cancer: to treat or not to treat? Concern that low-grade prostate cancers may be overtreated once they are discovered has led to controversy about the value of prostate cancer screening and what should be done if low-grade cancer is discovered. Dr. William G. Nelson, vice-chairperson of SU2C’s Scientific Advisory Committee, discusses the question in the blog of the American Association for Cancer Research, SU2C’s scientific partner.