Table 3.

Simplified color Doppler ultrasound classification of varicoceles.

Grade	Features
1	Reflux in the vessels of the inguinal canal that is observed only during the Valsalva maneuver and absence of varicosity on standard ultrasonography
2	Small varicosities with reflux seen only during the Valsalva maneuver.
3	Enlarged vessels whose caliber increases during the Valsalva maneuver.
4	Obvious vessel enlargement with reflux that is present under basal conditions and does not increase during the Valsalva maneuver