[Results of testicular sonography in boys. 1. Sonographic determination of testicle size and evaluation of the internal structure of the testicle in boys].

With ultrasound the testicle sizes of 665 boys aged from 0 to 15 were measured. After computation of linear regression a nomogram of testicle growth in childhood was obtained. Besides testicle size the evaluation of intratesticular structure is another important information for the evaluation of maturity of testicles.