This text provides a comprehensive, state-of-the art review of this field, and will serve as a valuable resource for clinicians, surgeons and researchers with an interest in early prostate cancer. The book reviews new data about genetic markers, transperineal mapping biopsy and mpMRI, how to apply each of these technologies in patients with elevated PSA, when a prior prostate biopsy performed by the standard TRUS method is negative and in cases where low risk disease is already diagnosed, how to differentiate those men who might harbor more aggressive disease from those who do not. Over 75% of newly diagnosed prostate cancer meets the criteria for low risk disease which has created a dilemma for both patients and clinicians. Active surveillance programs have been initiated and are reviewed. How the new technologies impact surveillance programs is addressed. Clinical stage designation is updated and a new intra-prostatic staging system is discussed. Prostate biopsy techniques utilizing transrectal ultrasound, transperineal mapping, elastography and mpMRI are compared. Finally, utilization of this new technology in the application of focal therapy is reviewed.