OUTLINE: This is an open-label, multicenter study. Patients receive Leuvectin intraprostatically over 10-30 seconds under transrectal ultrasound guidance on days 0 and 14. Patients are re-evaluated at week 10. Treatment repeats every 10-11 weeks or 1-6 days after completion of each week 10 re-evaluation for a maximum of 3 courses in the absence of disease progression or unacceptable toxicity. Patients are followed every 3 months for 1 year and then every 6 months for 2 years in the absence of disease progression.