Understanding Undescended Testis Cryptorchidism Causes and Treatments

Undescended testis, medically known as cryptorchidism, affects many newborn boys worldwide. This condition occurs when one or both testicles fail to move into the scrotum before birth. Understanding its causes, risks, and treatment options is crucial for parents and caregivers to ensure timely care and avoid complications.

Illustration of undescended testis location in a child's body

What Is Undescended Testis?

Normally, testicles develop inside the abdomen of a male fetus and descend into the scrotum during the last months of pregnancy. When this descent does not happen properly, the testis remains in the abdomen or groin area. This condition is called cryptorchidism or undescended testis.

It is one of the most common birth defects in boys, affecting about 3% of full-term newborns and up to 30% of premature infants. In many cases, the testis descends naturally within the first few months after birth, but if it does not, medical evaluation is necessary.

Causes and Risk Factors

The exact cause of undescended testis is not always clear, but several factors can contribute:

• Premature birth: Babies born early have a higher chance because testicular descent happens late in pregnancy.

• Low birth weight: Smaller babies are more prone to this condition.

• Family history: Boys with relatives who had cryptorchidism are at increased risk.

• Hormonal problems: Issues with hormones that regulate testicular descent can play a role.

• Anatomical abnormalities: Problems with the structures guiding the testis into the scrotum may prevent descent.

• Environmental factors: Exposure to certain chemicals during pregnancy might increase risk, though research is ongoing.

  
  

Understanding these factors helps doctors identify babies who need closer monitoring.

Why Early Diagnosis Matters

If undescended testis is left untreated, it can lead to several complications:

• Infertility: The higher temperature inside the abdomen can damage sperm-producing cells.

• Testicular cancer: The risk increases in undescended testicles, especially if untreated.

• Hernia: A weakness in the abdominal wall near the undescended testis can cause hernias.

• Testicular torsion: The testis may twist, cutting off its blood supply, which is a medical emergency.

  
  

Because of these risks, doctors recommend early diagnosis and treatment, usually before 12 to 18 months of age.

How Is Undescended Testis Diagnosed?

Diagnosis starts with a physical exam. The doctor will check if the testicles are in the scrotum and try to locate any undescended testis by feeling the groin and abdomen. If the testis cannot be felt, imaging tests like ultrasound or MRI may be used to locate it.

Sometimes, laparoscopy, a minimally invasive surgery, helps find the testis inside the abdomen.

Treatment Options

Treatment depends on the testis location, age of the child, and overall health. The main goal is to bring the testis into the scrotum and fix it there.

Hormonal Therapy

In some cases, doctors use hormone injections to stimulate the testis to descend. This treatment works best when started early but has limited success rates.

Surgery (Orchiopexy)

Surgery is the most common and effective treatment. It involves moving the testis into the scrotum and securing it to prevent retraction. This procedure is usually done between 6 and 18 months of age.

Surgery has a high success rate and helps reduce risks of infertility and cancer. After surgery, regular follow-up is important to monitor testicular growth and function.

Surgical instruments arranged for orchiopexy to treat undescended testis

What Parents Should Know

• Early checkups: Ensure your baby’s testicles are checked during newborn and infant visits.

• Watch for signs: If one side of the scrotum looks smaller or empty, consult a doctor.

• Follow treatment advice: If surgery is recommended, do not delay.

• Monitor development: After treatment, keep regular pediatric appointments to check testicular health.

  
  

Living with Undescended Testis

Most boys treated for undescended testis grow up healthy with normal fertility. However, some may need fertility evaluation in adulthood. Open communication with healthcare providers helps manage any long-term concerns.