What are the symptoms of prostate cancer?

What are the symptoms of prostate cancer?
In its early stages, prostate cancer often causes no symptoms. When symptoms do occur, they may include any of the following:

• dull pain in the lower pelvic area;
• frequent urination;
• problems with urination such as the inability, pain, burning, weakened urine flow;
• blood in the urine or semen;
• painful ejaculation;
• general pain in the lower back, hips or upper thighs;
• loss of appetite and/or weight;
• persistent bone pain