Prostate cancer has no symptoms in the early stages.
As the malignancy spreads, however, it may constrict the urethra and cause urinary problems. A sudden onset of constant pain in one or more bones lasting at least two weeks is symptomatic of advanced prostate cancer. This chronic pain occurs most often in the spine and sometimes flares in the pelvis, the lower back, the hips, or the bones of the upper legs. It may be accompanied by significant weight loss. The symptoms of BPH can mirror late-stage prostate cancer, because the enlarging inner portion of the prostate puts pressure on the urethra, potentially causing urinary problems.