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良性前列腺增生（BPH）是60岁以上男性最常见的良性肿瘤，主要与前列腺内雄激素代谢紊乱及间质细胞增生有关。BPH可致排尿困难，尿储留，肾积水及肾功能损害。因可发生并发症及可能致死，手术治疗而受到限制。前列腺具有保护生殖系统免遭细菌和其他病原微生物侵袭的局部免疫功?
Benign prostatic hyperplasia (BPH) is the most common benign tumor in men over the age of 60, and is mainly associated with abnormal androgen metabolism in the prostate and interstitial cell proliferation. BPH can cause dysuria, urinary retention, hydronephrosis, and renal impairment. Due to complications that may occur and may be fatal, surgical treatment is limited. Prostate has to protect the reproductive system from bacteria and other pathogenic microorganisms invasion of local immune function?