Fig. 4From: Appraisal of testicular volumes: volumes matching ultrasound values referenced to stages of genital developmentTesticular Volumes ((W-ss)3 × 0.88) for genital stage 1 (G), equivalent to Ultrasound W x H x L × 0.71. Age is the only criterion for the separation of G1a, b, and c. There is some growthBack to article page