Seminoma metastatic to the orbit.

Area of Science:

• Oncology
• Ophthalmology
• Urology

Background:

• Testicular cancer is the most common malignancy in young adult males.
• Seminoma is the predominant histologic subtype.
• Orbital metastasis from testicular cancer is exceedingly rare.

Observation:

• This report details a second documented case of direct orbital invasion by a seminoma.
• The patient presented with exophthalmos, a symptom sometimes associated with seminoma on a hormonal basis.
• The tumor had spread beyond the retroperitoneum, indicating advanced disease.

Findings:

• Direct orbital invasion by seminoma, while rare, can occur.
• Orbital biopsy offers a low-morbidity method to confirm metastatic disease.
• Confirmation of tumor status via biopsy is crucial before systemic treatment.

Implications:

• This case highlights the importance of considering extragonadal spread in testicular cancer.
• Orbital biopsy can be a valuable diagnostic tool in complex cases.
• Accurate staging through biopsy guides appropriate chemotherapy decisions for advanced seminoma.