Experience with testis sparing surgery for testicular teratoma

Area of Science:

• Pediatric Oncology
• Urologic Oncology
• Surgical Pathology

Background:

• Testicular teratoma is a rare pediatric neoplasm, often considered the second most common testis tumor in children.
• Previous reports suggest benign teratomas are less common than yolk sac tumors in pediatric populations.
• Testis-sparing surgery is a potential treatment option for benign testicular teratomas.

Purpose of the Study:

• To describe a single institution's experience with pediatric testicular teratoma.
• To evaluate the efficacy and safety of testis-preserving surgery for these tumors.
• To determine the incidence of teratoma in prepubertal boys.

Main Methods:

• Retrospective review of pathology records for testicular and paratesticular tumors in males under 18 years (1976-2002).
• Specific analysis of prepubertal teratoma incidence, including epidermoid cysts.
• Assessment of testis-preserving surgery outcomes, including atrophy index via ultrasound and long-term patient follow-up.

Main Results:

• Of 77 tumors, 38 were in prepubertal boys, including 11 mature teratomas and 5 epidermoid cysts.
• 13 of 16 boys with benign teratomas (81%) underwent testis-sparing surgery.
• Mean follow-up of 7 years showed no tumor recurrence; 9 patients had no testicular atrophy or discomfort at 10.2 months follow-up.

Conclusions:

• Benign teratoma was the most common pediatric testicular tumor at this institution, contrary to prior registry-based series.
• Single-institution experience confirms the safety and efficacy of testis preservation for pediatric teratoma.
• Testis-sparing surgery is the preferred treatment modality for testicular teratoma in children.