title: Microsurgical transverse 2-suture intussusception vasoepididymostomy: effectiveness and rationality.
abstract: BACKGROUND
  2-Suture longitudinal vasoepididymostomy shows superiority to transverse technique in an animal study; to date, this has not been consistently confirmed in human body. In the present study, we evaluated the effectiveness of 2-suture transverse intussusception vasoepididymostomy and compared the rationality between transverse and longitudinal techniques.
  
  
  METHODS
  From May 2007 to December 2008, we performed 2-suture transverse vasoepididymostomy in 19 consecutive patients, as described by Marmar with modification. Between March 2009 and January 2010, the internal diameter of the vas lumen and the outer diameter of the epididymal tube were measured using microruler (21 patients and 37 sides).
  
  
  RESULTS
  Three patients lost to follow-up. At the first follow-up period (ranged from 10 to 24 months), the patency rate was 56.3% (9/16) and the natural pregnancy rate was 25% (4/16). At the second follow-up period (ranged from 46 to 63 months), the patency rate was 68.8% (11/16), the natural pregnancy rate was 37.5% (6/16), respectively, and the take-home baby rate was 31.3% (5/16). The diameter of the vas lumen and the outer diameter of the epididymal tubule were (0.512 ± 0.046) mm and (0.572 ± 0.051) mm (P < 0.001), respectively.
  
  
  CONCLUSIONS
  Transverse 2-suture intussusception vasoepididymostomy is still an effective technique in treating obstructive azoospermia.
authors.affiliation: Department of Urology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Urology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China.
authors.forename: Wen-Tao
authors.initials: WT
authors.lastname: Huang
authors.affiliation: Department of Urology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China.
authors.forename: Xing-Xing
authors.initials: XX
authors.lastname: Ruan
authors.affiliation: Department of Urology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China.
authors.forename: Liao-Yuan
authors.initials: LY
authors.lastname: Li
authors.affiliation: Department of Urology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China.
authors.forename: Jin-Ming
authors.initials: JM
authors.lastname: DI
authors.affiliation: Department of Urology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China.
authors.forename: Xiao-Peng
authors.initials: XP
authors.lastname: Liu
authors.affiliation: Department of Urology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China.
authors.forename: Heng-Jun
authors.initials: HJ
authors.lastname: Xiao
authors.affiliation: Department of Urology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Gao
authors.affiliation: Department of Urology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China. Email: peter.yan.zhang@hotmail.com.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000328:Adult; D053713:Azoospermia / Q000601:surgery*; D006801:Humans; D008297:Male; D014659:Vasectomy / Q000379:methods* / Q000592:standards