THE NORMAL MIGRATION OF THE TESTICLE: The testes develop in the abdominal cavity in early fetal life. By 14 to 17 weeks of intrauterine life they migrate to an opening in the body wall known as the inguinal canal. After 28 weeks they pass through the canal and by 35 to 40 weeks reach the scrotum Undescended testes. Undescended testes are a common problem At birth 3.5% of boys will have an undescended testes CAVITY NAL Approximately 30% will have both testes involved. a large proportion of these testes will have descended by 3 months after birth with just 1% of boys still having an INGUINAL undescended testes by 1 year of age CANAL Premature infants have a much higher SCROTUM chance of having an undescended testes Testicular descent is a complex process and not yet fully understood. It is known that the process depends on adequate hormone levels as well as mechanical and neurological factorsTHE NORMAL MIGRATION OF THE TESTICLE THE NORMAL MIGRATION OF THE TESTICLE: The testes develop : The testes develop in the abdominal cavity in early fetal life. By 14 to 17 weeks of intrauterine life they migrate to an opening in the body wall known as the inguinal canal After 28 weeks they pass through the canal and by the inguinal canal. After 28 weeks they pass through the canal and by 35 to 40 weeks reach the scrotum. U d d dt t U n descen d e d tes tes . Ud dd n descen d e d testes are a common problem. At birth 3.5% of boys will have an undescended testes. Approximately 30% will have both testes Approximately 30% will have both testes involved. A large proportion of these testes will have descended by 3 months after birth with just 1% of boys still having an with just 1% of boys still having an undescended testes by 1 year of age. Premature infants have a much higher chance of having an undescended testes. chance of having an undescended testes. Testicular descent is a complex process and not yet fully understood. It is known that the pp q rocess de pends on ade quate hormone levels as well as mechanical and neurological factors