This is a study in which patients with prostate cancer treated by surgical removal of the prostate and considered to be at risk for prostate cancer recurrence will receive Exisulind 250 mg twice a day or placebo twice a day for two years.

Males 18 years of age or older with prostate cancer treated primarily by radical prostatectomy and randomized within 45 days after surgery may be eligible for enrollment into this protocol. Participants cannot have had hormonal therapy, cryotherapy, thermotherapy, or radiotherapy prior to entering the study.