Cryptorchidism in the Prader-Willi syndrome

Area of Science:

• Pediatric Endocrinology
• Genetics
• Urology

Background:

• Prader-Willi syndrome (PWS) is a complex genetic disorder affecting multiple body systems.
• Undescended testes (cryptorchidism) are a common congenital anomaly in male infants.
• The management of cryptorchidism in PWS patients presents unique challenges.

Purpose of the Study:

• To investigate the prevalence and characteristics of undescended testes in male children with Prader-Willi syndrome.
• To evaluate the efficacy of spontaneous descent and gonadotropin therapy for cryptorchidism in this population.
• To assess the implications for surgical management, such as orchiopexy.

Main Methods:

• Retrospective review of 30 male patients diagnosed with Prader-Willi syndrome.
• Documentation of testicular position at initial evaluation and during follow-up.
• Analysis of spontaneous descent rates and response to gonadotropin treatment.
• Review of testicular biopsy findings in a subset of patients.

Main Results:

• 70% of PWS patients had at least one undescended testis; 45% had bilateral undescended testes.
• Late spontaneous testicular descent occurred in 22% of observed patients.
• Gonadotropin therapy facilitated descent in 3 out of 4 treated patients.
• Testicular biopsy revealed a Sertoli-cell-only appearance in 4 patients, indicating potential impaired spermatogenesis.

Conclusions:

• Undescended testes are highly prevalent in male children with Prader-Willi syndrome.
• A significant proportion experience late spontaneous descent or respond to gonadotropin therapy.
• Current indications for orchiopexy may need re-evaluation in the context of PWS, considering potential testicular pathology.