[Burn out bilateral testicular tumor]

Area of Science:

• Oncology
• Urology
• Pathology

Background:

• Primary extragonadal germ cell tumors, specifically seminomas in the retroperitoneum, are rare.
• Differentiating these from metastatic testicular tumors with occult primaries or burned-out testicular cancers poses diagnostic challenges.

Observation:

• A case is presented of a patient with retroperitoneal seminoma.
• The patient exhibited ultrasonographic and pathological testicular abnormalities but no definitive tumor in the testes.
• The retroperitoneal mass was treated with chemotherapy and surgery, alongside bilateral orchiectomy.

Findings:

• All surgical specimens, including testes and the residual retroperitoneal mass, were negative for active testis cancer.
• This suggests a 'burned-out' primary testicular tumor scenario.

Implications:

• Retroperitoneal tumors with testicular abnormalities warrant consideration as metastases from burned-out testicular cancer.
• Mandatory biopsy is crucial for diagnosis.
• Individualized assessment for surgical intervention, including orchiectomy, is recommended.