Testicular retention or undescended testicle is a disorder in which during the intrauterine development of the boy there was no dropping of the testicle into their natural position – in the scrotum.
The testicles can be undescended only on one side or on both sides.
Testicles begin to develop in the abdomen (stomach). During the development of the child in the uterus, testicles, due to a series of hormonal and anatomic influences, descend towards the scrotum. Therefore, it is a congenital anomaly of male external genitalia. This disorder can occur at any stage of descending, so it depends on this where the undescended testicle will remain.