2. Patients must agree to have repeat extended 11-core multisite biopsy (sextant locations, midline, and 2 cores each from the left and right anterior horn) of the prostate at study entry. A baseline prostate biopsy is not indicated if a repeat biopsy following the extended biopsy scheme (at least 10 biopsy cores) was performed at The University of Texas M. D. Anderson Cancer Center (MDACC) within 6 months of study entry.