Undescended testis: What paediatricians need to know

Area of Science:

• Pediatric endocrinology
• Urology
• Developmental biology

Background:

• Undescended testis (UDT) results from abnormal testicular descent.
• Normal descent involves transabdominal (insulin-like hormone 3) and inguinoscrotal (androgens) phases.
• Defects in the inguinoscrotal phase contribute to the high incidence of UDT.

Purpose of the Study:

• To review the pathophysiology and clinical management of undescended testis.
• To emphasize optimal timing for surgical intervention in congenital and acquired UDT.
• To highlight the importance of screening for UDT in infancy and childhood.

Main Methods:

• Review of current literature on testicular descent and UDT.
• Analysis of diagnostic criteria and recommended surgical timelines.
• Discussion of hormonal regulation and developmental processes involved in testicular migration.

Main Results:

• Congenital UDT is diagnosed by 3-6 months, with surgery recommended at 6-12 months.
• Acquired UDT ('ascending' testis) requires surgery between 5-10 years.
• Screening for UDT at school entry is advised for all boys.

Conclusions:

• Prompt diagnosis and appropriate surgical timing are essential for managing UDT.
• Understanding the hormonal and mechanical factors in testicular descent informs clinical practice.
• Systematic screening ensures timely intervention for both congenital and acquired UDT.