前列腺癌是老年人疾病,50岁前很少发生,患者早期症状隐蔽,很难早期发现。随着肿瘤标志物的发展,前列腺特异抗原(PSA)已被公认为前列腺癌检测和评估的重要指标。PSA由前列腺上皮细胞分泌,血清中PSA浓度增加,提示前列腺发生病理变化,包括前列腺癌和前列腺增生,这两种患者的PSA检 Prostate cancer is an elderly disease, rarely occurs before the age of 50, early symptoms of patients hidden, it is difficult to early detection. With the development of tumor markers, prostate-specific antigen (PSA) has been recognized as an important indicator of prostate cancer detection and evaluation. PSA is secreted by prostatic epithelial cells and serum PSA levels increase, suggesting pathological changes in the prostate, including prostate cancer and benign prostatic hyperplasia. Both PSA tests