title: A proposed anatomic typing of the right internal spermatic vein: importance for percutaneous sclerotherapy of varicocele.
abstract: OBJECTIVE
  To classify the anatomic types of the right internal spermatic vein (ISV).
  
  
  METHODS
  We evaluated venograms obtained in 150 consecutive patients with idiopathic varicocele referred for transfemoral sclerotherapy.
  
  
  RESULTS
  Six anatomic types of the right internal spermatic vein (ISV) were recognized. These were classified by the location of their orifices and the tributary venous patterns. In roughly half the patients (53%), the ISV appeared as a simple vein with no remarkable retroperitoneal interconnections. In the remainder, complex retroperitoneal anastomoses were encountered.
  
  
  CONCLUSIONS
  By understanding these anatomic variations, the angiographer can approach treatment of right-sided varicocele with foreknowledge of the nature of these types and the presence of valves and collaterals.
authors.affiliation: Department of Radiology, Rabin Medical Center Beilinson Campus (the Sackler Medical School Tel Aviv University), Petach Tikva, 49100, Israel. yoels1@gmail.com
authors.forename: Yoel
authors.initials: Y
authors.lastname: Siegel
authors.forename: Yigal
authors.initials: Y
authors.lastname: Gat
authors.forename: Gil N
authors.initials: GN
authors.lastname: Bacher
authors.forename: Michael
authors.initials: M
authors.lastname: Gornish
mesh_terms: D000328:Adult; D000368:Aged; D003287:Contrast Media; D006801:Humans; D007472:Iohexol / Q000031:analogs & derivatives; D008297:Male; D008875:Middle Aged; D010690:Phlebography; D015641:Radiography, Interventional; D015911:Sclerotherapy; D013085:Spermatic Cord / Q000098:blood supply*; D016896:Treatment Outcome; D014646:Varicocele / Q000628:therapy*; D014680:Veins / Q000033:anatomy & histology*
chemical_list: D003287:Contrast Media; D007472:Iohexol; C038192:iopromide