Michael E. DeBakey Department of Surgery, Michael E. DeBakey VAMC, Baylor College of Medicine, 2002 Holcombe Blvd, OCL (112), Houston, TX 77030, USA.
Int Urol Nephrol. 2012 Apr;44(2):385-91. doi: 10.1007/s11255-011-0042-7. Epub 2011 Aug 6.
Duplication of the vas deferens is the identification of a second vas deferens within the spermatic cord; it is a rarely reported congenital anomaly. Duplicate vas deferens should not be confused with double vas deferens that describes ipsilateral renal agenesis with a blind ureter ending in the ejaculatory system.
We present a case of duplicated vas deferens, and a PubMed Medline (National Library of Medicine) search was performed using the terms "[duplicated OR double]" and "vas deferens". Nineteen papers for a total of twenty-two cases (including ours) were identified.
Duplication of vas deferens is a rare finding; it is likely under-reported and underrecognized. Failure to recognize this variation can result in injury to the vas deferens or an ineffective vasectomy. Following identification of a suspected duplicated vas deferens, the structure should be tracked from the internal ring down to the epididymis and intra-operative Doppler should be performed. Post-operatively, renal and bladder imaging can be considered though there have been no reported cases of non-testicular genito-urinary anomalies associated with duplicated vas deferens.
输精管重复是指在精索内发现第二条输精管；这是一种罕见的先天性异常。重复的输精管不应与双输精管混淆，后者描述的是同侧肾发育不全，盲输尿管末端通向生殖系统。
我们报告了一例输精管重复的病例，并使用“[重复或双]”和“输精管”这两个术语在 PubMed Medline（美国国家医学图书馆）上进行了检索。共确定了 19 篇论文，共计 22 例（包括我们的病例）。
输精管重复是一种罕见的发现；它可能报告不足，认识不足。未能识别这种变异可能导致输精管损伤或输精管绝育术无效。在发现疑似重复的输精管后，应从内环追踪到附睾，并进行术中多普勒检查。术后可以考虑进行肾脏和膀胱成像，但尚未有报道称与重复输精管相关的非睾丸生殖泌尿系统异常。
