Meacham R B, Townsend R R, Rademacher D, Drose J A
Department of Surgery, University of Colorado Health Sciences Center, Denver.
J Urol. 1994 Jun;151(6):1535-8. doi: 10.1016/s0022-5347(17)35295-3.
The association between male subfertility and varicocele has long been recognized. Physical examination is the most widely used method for detecting varicoceles but other techniques may be more sensitive. Color Doppler sonography has the theoretical advantage of allowing direct demonstration of reversed flow in the testicular veins. The frequency of detection of reversed flow by color Doppler ultrasound in a normal population is, however, unknown. We evaluated 34 asymptomatic young men with physical examination, standard scrotal sonography and color Doppler evaluation of the scrotal veins. Findings were correlated with semen analysis. Of the subjects 15% had varicoceles by physical examination and 18% by scrotal sonography, while 35% had retrograde flow by color Doppler evaluation. The majority of men in this population did not exhibit retrograde flow within the gonadal veins when evaluated by color Doppler sonography. The physiological significance of retrograde flow, however, remains to be defined.
男性生育力低下与精索静脉曲张之间的关联早已得到认可。体格检查是检测精索静脉曲张最广泛使用的方法，但其他技术可能更敏感。彩色多普勒超声检查在理论上具有直接显示睾丸静脉逆流的优势。然而，正常人群中通过彩色多普勒超声检测到逆流的频率尚不清楚。我们对34名无症状的年轻男性进行了体格检查、标准阴囊超声检查以及阴囊静脉的彩色多普勒评估。检查结果与精液分析相关。在这些受试者中，通过体格检查发现15%患有精索静脉曲张，通过阴囊超声检查发现18%患有精索静脉曲张，而通过彩色多普勒评估发现35%存在逆流。当通过彩色多普勒超声检查时，该人群中的大多数男性在性腺静脉内未表现出逆流。然而，逆流的生理意义仍有待确定。
