Cryptorchidism

Cryptorchidism is a condition where one or both testicles fail to move down into the scrotum before birth. It affects the male reproductive system and is one of the most common birth defects in boys. Normally, testicles develop in the abdomen and descend into the scrotum during fetal development. When this process is incomplete, the testicle remains in the abdomen or groin, which can cause problems with fertility and increase the risk of testicular cancer later in life. The condition is usually noticed shortly after birth during a physical exam. Early detection is important because untreated cryptorchidism can lead to complications. The main health concern is that the testicle is not in the proper environment for normal development and function.

Cryptorchidism is defined as the failure of one or both testicles to descend into the scrotal sac by birth or shortly thereafter. The core pathology involves arrested testicular descent along the normal pathway from the abdomen through the inguinal canal to the scrotum. This failure is often due to hormonal imbalances, mechanical obstruction, or genetic factors affecting the gubernaculum or androgen signaling. It is the most common congenital anomaly of the male genitalia and is associated with increased risks of infertility, testicular torsion, and testicular malignancy. The condition can be unilateral or bilateral and may be classified as palpable or nonpalpable depending on the location of the undescended testis. Early diagnosis and management are critical to preserve testicular function and reduce long-term complications.