This study is called a registry study. A registry study collects information about a group of people who have the same medical condition. This is not a treatment study. The type of prostate cancer treatment subjects received will be determined by the subject and their physician and will not be affected by their participation in this study. This research is being done is to create a comprehensive nationally-representative clinical database to facilitate the study of existing and emerging technologies for prostate cancer ablation. Ablation refers to the use of various energy sources to destroy both normal and cancerous prostate cells.