These are tables constructed on the basis of the PSA, stage, grade and surgical findings of over 4,000 men. The tables are used to predict the probability that the prostate cancer has spread to the lymph nodes and/or seminal vesicles, penetrated the capsule, or remains confined to the prostate. They were initially developed by a group of urologists at the Brady Institute for Urology at Johns Hopkins University. They are called “Partin Tables” after just one of the original contributors to this research.