title: [Ultrasonographic changes in the epididymis after long-term vasectomy].
abstract: OBJECTIVE
  To evaluate the ultrasonographic changes in the epididymis after long-term vasectomy.
  
  
  METHODS
  Sixty-four patients with a history of vasectomy for more than 10 years (vasectomy group) and another 60 without vasectomy (control group) were included in the study. The patients were referred to scrotal ultrasonography for epididymal indications. The shape, thickness and internal echoes of the head, body and tail of the epididymis were observed with high frequency ultrasonography (HFU), and the blood flow changes were observed with color Doppler flow imaging (CDFI) or color Doppler power imaging (CDPI).
  
  
  RESULTS
  Significantly higher rates were found in the vasectomy group than in the control: thickened body (64.1% vs 15.0%) and tail (78.1% vs 51.7%) of the epididymis, thickened head, body and tail (42.2% vs 8.3%) of the epididymis, and epididymal tubular ectasia (54.7% vs 8.3%). However, increased blood flow in the epididymis was seen at a significantly lower rate in the vasectomy group than in the control (15.6% vs 61.7%).
  
  
  CONCLUSIONS
  The ultrasonographic changes in the epididymis after long-term vasectomy were mainly epididymis thickening and epididymal tubular ectasia, mostly with no or diminished blood flow in the epididymis.
authors: Department of Ultrasound, the Affiliated Hospital, North Sichuan Medical College, Nanchong, Sichuan 637000, China. caoltnc@163.com
authors: Li-ting
authors: LT
authors: Cao
authors: Zheng-wei
authors: ZW
authors: Yang
authors: Peng
authors: P
authors: Gu
authors: Min-hui
authors: MH
authors: Zhang
authors: Qing
authors: Q
authors: Zhang
authors: Xian-zhong
authors: XZ
authors: Deng
authors: Ji-zhong
authors: JZ
authors: Wang
mesh_terms: D000328:Adult; D000368:Aged; D004822:Epididymis / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D014463:Ultrasonography; D014659:Vasectomy