Because prostate cancer usually grows slowly, some men with prostate cancer, especially those who are older or have other health problems, may never be treated for it. Instead, their doctors may recommend active surveillance, an approach also known as "watchful waiting.”
This approach involves closely monitoring the prostate cancer without active treatment such as surgery or radiation therapy. Biopsies and PSA tests are repeated at set intervals, and treatment may be recommended if the tumor shows an increase in the volume or the grade (Gleason score).
Long-term studies of active surveillance for men with low-volume, low-grade prostate cancer tumors show that approximately 70% can maintain this approach for up to 10 years without requiring treatment.