A 62-year-old man with a known diagnosis of benign prostatic hyperplasia is seen at his annual physical and found to have a prostate- specific antigen level of 11.2 ng/mL, up from 6.4 ng/mL the previous year. Ultrasound- guided transrectal prostate biopsies are per- formed. If the biopsies are positive for prostate cancer, what zone of the prostatic tissue is most likely involved by the cancer cells?
一名被诊断为良性前列腺增生的62岁男性在年度体检时被发现前列腺特异性抗原水平为11.2 ng/mL，高于前一年的6.4 ng/mL。超声引导下经直肠前列腺穿刺活检。如果活检结果为前列腺癌阳性，那么前列腺组织的哪个区域最有可能被癌细胞累及?
(A) Neurovascular bundle 神经血管束
(B) Peripheral 外围
(C) Periurethral 尿道周
(D) Seminal vesicle 精囊
(E) Transition 转变
答案解析：
70%的前列腺癌位于外周带。外周带与移行带有不同的胚胎来源，移行带是BPH最常见的部位。
正确答案：B
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