MethodsTwenty-seven prostatic outer glands in patients suspicious for prostatic cancer (PCA) were biopsied by TRUS guided, the total sites were 47.

• 方法27例患者因临床疑诊前列腺癌而行TRUS引导下前列腺外腺定点穿刺活检,共计47点。同一穿刺点上分别在纵向和横向引导下各穿刺1针;