Undescended Testis in Boys: A Parent's Guide to Cryptorchidism

By Prof. Dr. A. Muraleedharan

As parents, we constantly strive to ensure the health and well-being of our children. Sometimes, during early check-ups, doctors may identify a condition that can cause concern: an undescended testis, medically known as cryptorchidism. This common pediatric condition, where one or both testicles have not moved into the scrotum, affects a significant number of baby boys, especially those born prematurely. While the initial discovery can be worrying, understanding the condition, its implications, and available treatments is key to ensuring your child's long-term health. At Iswarya Hospital, our dedicated Pediatrics & Neonatal Surgery department is equipped with expertise and advanced facilities to guide you through every step of this journey.

What Exactly is an Undescended Testis (Cryptorchidism)?

To understand an undescended testis, it helps to know a little about how testicles normally develop. During fetal development, a boy's testicles form inside his abdomen. As the pregnancy progresses, usually in the seventh or eighth month, they gradually descend through a pathway called the inguinal canal into the scrotum – the sac of skin located behind the penis. This descent is crucial because the scrotum provides a slightly cooler environment than the body's core temperature, which is essential for healthy sperm production later in life.

An undescended testis occurs when one or both testicles fail to complete this journey and remain in the abdomen, in the inguinal canal, or somewhere else along the path of descent. It's important to differentiate between a truly undescended testis and a retractile testis. A retractile testis is one that can move back and forth between the groin and the scrotum due to a strong reflex, but can easily be guided down into the scrotum during examination and stays there temporarily. A truly undescended testis, however, cannot be manually brought down or remains persistently outside the scrotum. Sometimes, a testis may be absent altogether, a rare condition known as monorchidism or anorchia if both are missing.

Causes and Risk Factors for Cryptorchidism

In many cases, the exact reason for an undescended testis remains unknown. However, several factors are believed to increase a baby boy's risk of developing the condition:

• Premature Birth: Babies born before full term (especially before 37 weeks of gestation) have a higher incidence of cryptorchidism because the testicular descent process may not have completed.
• Low Birth Weight: Infants with a low birth weight are also at an increased risk.
• Family History: If a father, brother, or other male relative had an undescended testis, there's a slightly higher chance for the baby.
• Maternal Health Factors: Certain conditions in the mother during pregnancy, such as gestational diabetes, obesity, or smoking, have been associated with a higher risk.
• Exposure to Certain Chemicals: Some studies suggest that maternal exposure to certain endocrine-disrupting chemicals may play a role.
• Abnormalities in Testicular Development: Problems with the development of the testicle itself or the hormones that control its descent can also be a cause.

It's important to remember that having one or more risk factors doesn't guarantee your child will have an undescended testis, and many boys with the condition have none of these risk factors.

Why Early Diagnosis and Treatment are Crucial

While an undescended testis might seem like a minor issue initially, leaving it untreated carries several significant long-term health risks. This is why early diagnosis and timely intervention are paramount:

Increased Risk of Infertility

The primary reason testicles descend into the scrotum is to remain at a cooler temperature, which is essential for the healthy development of sperm-producing cells. Testicles that stay in the warmer abdominal cavity or inguinal canal are exposed to higher temperatures, which can damage these cells and severely impair fertility later in life. Studies show that the longer a testis remains undescended, the greater the risk of fertility problems, especially if both testicles are affected.

Higher Risk of Testicular Cancer

Boys with a history of undescended testis have a significantly increased risk of developing testicular cancer, even after the testis has been surgically brought down into the scrotum. While the absolute risk remains low, it is still higher than in the general population. Early surgical correction (orchiopexy) might make it easier to detect cancer through self-examination later, but it doesn't eliminate the increased risk entirely.

Increased Risk of Testicular Torsion

Testicular torsion is a painful condition where the spermatic cord (which supplies blood to the testicle) twists, cutting off blood flow. An undescended testis is more prone to torsion because it may not be as firmly anchored as a descended one. This is a medical emergency that requires immediate surgical intervention to save the testicle.

Inguinal Hernia

The pathway through which the testicle descends (the inguinal canal) usually closes after descent. If it doesn't close completely, a portion of the intestine can push through, leading to an inguinal hernia. This is a common associated problem with undescended testicles.

Psychological Impact

As a boy grows older, the absence of a testicle in the scrotum can lead to body image issues, self-consciousness, and psychological distress, particularly during puberty and adolescence.

When to See a Doctor

An undescended testis is usually identified during a routine physical examination of a newborn. If your pediatrician or family doctor detects this, they will typically monitor the situation. In about half of the cases, the testicle will descend on its own within the first few months of life. However, if the testicle has not descended by 6 months of age, it is highly unlikely to descend naturally. At this point, it is crucial to consult a pediatric surgeon. Most medical guidelines recommend surgical correction between 6 and 12 months of age, as this timeframe offers the best outcomes for fertility preservation and reduces other risks.

Diagnosis and Treatment: The Orchiopexy Procedure

Diagnosing an undescended testis typically involves a thorough physical examination by a pediatrician or pediatric surgeon. The doctor will gently palpate (feel) the groin and scrotum to locate the testicle. If it's not palpable, further investigations might be considered.

Diagnostic Tools:

• Physical Examination: The primary method. The doctor will try to gently guide the testicle into the scrotum to determine if it's retractile or truly undescended.
• Imaging Tests: While not always necessary, an ultrasound may be performed, especially if the testicle is not palpable, to try and locate it. However, ultrasound has limitations in finding testicles located high in the abdomen. In some complex cases, an MRI or diagnostic laparoscopy might be considered.

Treatment: Orchiopexy

The cornerstone of treatment for an undescended testis is a surgical procedure called orchiopexy. This surgery aims to bring the undescended testicle down into the scrotum and secure it in place to prevent it from retracting.

What to Expect During Orchiopexy:

• Anesthesia: The procedure is performed under general anesthesia, meaning your child will be asleep and feel no pain.
• Incision: The surgeon will typically make a small incision in the groin area. If the testicle is not found there, a second small incision might be made in the scrotum. In cases where the testis is high in the abdomen, a minimally invasive laparoscopic approach may be used, involving tiny incisions and a camera.
• Mobilization: The surgeon carefully frees the testicle and lengthens the spermatic cord, which contains the blood vessels and vas deferens (the tube that carries sperm).
• Placement and Fixation: A small pouch is created in the scrotum, and the testicle is gently guided into this pouch and secured with dissolvable stitches to prevent it from moving back up.
• Closure: The incisions are then closed with dissolvable stitches, often covered with a sterile dressing.

Orchiopexy is a common and generally safe procedure. The duration typically ranges from 45 to 90 minutes, depending on the location of the testicle and complexity. Most children go home on the same day.

Caring for Your Child Post-Surgery and Long-Term Outlook

After orchiopexy, your child will need some care to ensure a smooth recovery. Our medical team at Iswarya Hospital will provide detailed instructions, but here are some general tips:

• Pain Management: Your child may experience some mild pain or discomfort, which can usually be managed with prescribed pain medication.
• Wound Care: Keep the incision sites clean and dry. Follow instructions regarding bathing and dressing changes.
• Activity Restriction: Limit strenuous activities, climbing, and rough play for a few weeks to allow the surgical site to heal properly.
• Diet: Your child can usually resume a normal diet as soon as they feel up to it.
• Follow-up Appointments: Regular follow-up appointments with your pediatric surgeon are essential to monitor healing and ensure the testicle remains in its correct position.

The long-term outlook after successful orchiopexy is generally good. Most boys have improved chances of fertility and a reduced risk of testicular cancer compared to leaving the condition untreated. However, even after surgery, a slight increased risk for testicular cancer remains, so it's important to teach your son self-examination techniques for his testicles once he reaches puberty. This practice allows for early detection of any abnormalities, which is vital for effective treatment.

Conclusion

An undescended testis is a common condition that, while initially concerning, has a well-established and highly effective treatment. Early diagnosis and timely surgical intervention (orchiopexy) are crucial to mitigate potential long-term risks such as infertility, testicular cancer, and other complications. If your child has been diagnosed with an undescended testis, rest assured that specialized care is available. At Iswarya Hospital, our expert team in the Pediatrics & Neonatal Surgery department is committed to providing comprehensive, compassionate care for your child, ensuring the best possible health outcomes. We are here to support your family with advanced surgical solutions and dedicated follow-up care.