56岁的老柳是某重点中学教导主任,每天在单位风风火火,可私下里他有个难言之隐,经常尿路不畅,有的时候甚至尿不出来。为此,他看了不少医院,也吃了不少药物,可始终疗效甚微。近期又再度严重,在办公室坐一小时,就是尿不出来了。他跑到医疗技术较高的一所三级甲等医院,经过系列物理检查,他的前列腺癌的特异性标志物血清蛋白PSA已经高达29ng/ml。一般认为,血清PSA小于4.0ng/ml为正常,大于10ng/ml则患前腺癌的危险性增加。他被确诊为 Liu, a 56-year-old professor of teaching at a key middle school, is in a hurry every day in his unit. However, he has a hidden secret in his private life. He often has poor urination and sometimes urine does not come out. To this end, he saw a lot of hospitals, but also eat a lot of drugs, may have little effect. Recently again serious, sitting in the office for an hour, it is out of urine. He went to a tertiary medical hospital with a higher level of technical expertise. After a series of physical examinations, his PSA, a specific marker of prostate cancer, had reached 29 ng / ml. Is generally believed that serum PSA less than 4.0ng / ml is normal, greater than 10ng / ml increased risk of pre-cancerous adenocarcinoma. He was diagnosed as