The enlarged prostate gland seen here not only has enlarged lateral lobes , but also a greatly enlarged median lobe that obstructs the prostatic urethra 增生的前列腺不僅側(cè)葉增大,中葉也增大,并且阻塞了尿道前列腺部。
If this process were bilateral , then the problem would originate in the bladder trigone or urethra ( or the prostate around the urethra ) or some process ( such as a large neoplasm ) that could impinge on both ureters 如果病變是雙側(cè)的,原因可能是膀胱三角或尿道前列腺部的病變;或是其它能侵犯兩側(cè)輸尿管的病變(如大的腫瘤塊) 。