Which of the following would be useful as an effective anti-androgen therapy in a 78-year-old patient with prostate cancer?

I. Bilateral orchiectomy.
II. A testosterone antagonist such as bicalutamide only.
III. An LH-RH antagonist such as cetrorelix.
  1. I only
  2. III only
  3. I and/or III
  4. II only
Explanation
Answer: C. A bilateral orchiectomy and/or the use of an LH-RH antagonist are considered to be effective therapy for prostate cancer. Testosterone antagonists alone are not considered an effective therapy.
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