Normative Values for Testicular Descent from Infancy to Adulthood

Abstract

Measurements of testicular descent and volume were performed on 100 newborns and 144 older children and adults. Mean values of testicular descent were determined for age as well as for Tanner pubertal stage, establishing normative values. We later used these normative values for testicular descent to evaluate subjects who had undergone treatment for cryptorchidism many years previously. These normative values are useful both for the evaluation and follow-up of cryptorchid, suboptimally descended, and retractile testes, as well as for the evaluation and follow-up of therapy, and may prove especially useful in the decision for therapeutic intervention with suboptimally descended testes.

Pilot Studies of Estrogen-Related Physical Findings in Infants

“…Orchidometric assessment in Taiwanese newborns showed mean volume of 1.3 ± 0.3 mL (Chin et al 1998). Chemes (2001) and Sak et al (1993) reported infant testicular volumes of approximately 1 mL. In a small but longitudinal study, Cassorla et al (1981) measured testicular volumes with orchidometer beads of the same sizes as ours monthly in 10 U.S. boys from birth to 6 months of age.…”

Testicular descent: the first step towards fertility

“…Another possible cause for these acquired variants of cryptorchdism . is failure of the processus vaginalis to obliterate (Atwell, 1985), preventing normal elongation of the spermatic cord (Mayr et al, 1993;Sack et al, 1993).…”