Varicocele can be very easily diagnosed by physical examination and subsequ
ently treated when it is painful or associated with testicular hypotrophy.
However, palpability of the spermatic vein and reflux in low grade or even
questionable varicoceles can be difficult to assess without imaging modalit
ies. This can be a common problem for all physicians treating hypofertile m
en to decide whether the varicele needs to be treated or not. However, a go
ld standard that defines the presence of a subclinical varicocele has not y
et been established. The different diagnostic tools based on ultrasonograph
y investigated these past years to define a flow reversal in incontinent sp
ermatic veins are presented in the first part of this review, with emphasis
on subclinical varicocele. In the second part, we present our experience,
together with a review of the literature concerning embolization of the spe
rmatic veins as an alternative to surgery to treat varicoceles.