Prostate cancer is the most common cancer experienced by men in France. It generally develops slowly, starting in the cells of the prostate, a small gland located below the bladder which plays an essential role in the production of seminal fluid. Often silent at first, it is sometimes discovered during a simple screening test. Although a prostate cancer diagnosis can be worrying, many forms of prostate cancer develop slowly and can be effectively managed with suitable treatment. Understanding the disease, its mechanisms and the available treatment options is an essential part of making informed choices together with your medical team.