射精管阻塞是不育症不太常见的原因,诊断依据为精液量少,无精浆果糖,严重少精/无精,血清促性腺激素水平正常。7名可疑射精管阻塞的病人术前作经直肠超声以观察精囊,输精管壶腹,射精管及后尿道解剖,结果发现3例轻度至中度精囊扩张,1例双侧输精管壶腹扩张,1例小的中线泌尿生殖窦囊肿及正常精囊。在活检证实睾丸组织学正常及输精管造影显示远端导管阻塞后, Ejaculatory duct obstruction is less common cause of infertility, diagnosis based on semen less, apathetic fructose, severe oligozoospermia / azoospermia, serum gonadotropin levels. Seven suspicious ejaculatory duct obstruction patients preoperative transrectal ultrasound to observe the seminal vesicle, the ampulla of the vas deferens, ejaculatory duct and posterior urethra anatomy and found that 3 cases of mild to moderate seminal vesicle dilatation, 1 case of bilateral ampulla ampoule expansion, A case of a small median urogenital sinus cysts and normal seminal vesicles. After biopsy confirmed testicular histology and vas deferens angiography showed distal catheter obstruction,