Prostate cancer is a type of sickness that affects the prostate, which is a part of the body that only boys have. The prostate is like a tiny gland that helps with making special liquid that comes out when grown-ups go to the bathroom. Sometimes, because of certain reasons, some cells in the prostate can grow out of control and make a big problem. This can make the prostate feel painful and not work as it should. Doctors can help grown-ups who have prostate cancer by giving them special medicines or doing an operation to make them better and feel good again.