[Clinical studies of varicocele. 2: Radiographic examination and measurement of spermatic vein pressure in varicocele patients].
There are two types of internal spermatic veins (ISV) by radiographic examinations. In type 1, ISV is dilated with some collateral venous branches. On the other hand, ISV of type 2 is narrowed with increased collateral venous branches or abnormalities such as the circumaortic renal are seen. In these groups, pressure of renal vein and ISV were measured. As a result, renal vein pressure was about the same in type 1 as in the controls at 9.5 +/- 2.3 cmH2O but was higher in type 2 at 17.0 +/- 2.8 cmH2O. As for ISV, it was also about the same in type 2 as in the controls at 13.9 +/- 6.8 cmH2O but was markedly higher in type 2 at 33.3 +/- 3.9 cmH2O. When selective renal venography was performed, a contrast medium back-flow was seen in 9 out of 11 type 1 varicocele patients, but it was not seen in any of the cases with the nutcracker phenomenon. These results suggested that type 1 may be caused by the structural and functional disorders in the valve between the renal vein and ISV. In contrast, pathogenesis of type 2 varicocele may be due to an abnormality of the ISV in the embryo.
Yasumoto
R
R
Department of Urology, Osaka Municipal Kita Citizen's Hospital.
Asakawa
M
M
Kakinoki
K
K
Kawashima
H
H
Moriya
K
K
Maekawa
T
T
Kobayakawa
H
H
D006801:Humans; D008297:Male; D010690:Phlebography; D013737:Testis / Q000098:blood supply* / Q000000981:diagnostic imaging; D014646:Varicocele / Q000000981:diagnostic imaging / Q000503:physiopathology*; D014690:Venous Pressure