According to publications in the foreign literature, the incidence of secondary testicular structures in the patients with congenital adrenal cortical dysfunction (CACD) amounts to 90%. In this country, the scheduled screening for TART tumours in the male patients presenting with CACD is not carried out. At the same time, the late consequences of this pathology (infertility, obstructive testicular diseases) require increasingly more attention starting from the early childhood.