Yushen Qian, MD, a radiation oncologist at Stanford Health Care, discusses prostate cancer diagnosis and the benefits of shared decisionmaking from screening through potential treatment. Topics include:

• who is at risk,
• how cancer risk is determined,
• what PSA levels are considered normal as we age,
• how a prostate biopsy is conducted,
• Gleason scores and how prostate cancer is staged,
• the difference between Watchful Waiting and Active Surveillance,
• when treatment intervention might be considered