Pineal germinoma with widespread extracranial metastases

Area of Science:

• Neuro-oncology
• Pathology
• Radiology

Background:

• Primary pineal germinomas are rare tumors.
• Extracranial metastasis from pineal germinoma is exceptionally uncommon.
• This case highlights a unique presentation of advanced disease.

Purpose of the Study:

• To present a rare case of primary pineal germinoma with widespread extracranial metastasis.
• To discuss the diagnostic challenges and methods used.
• To explore the likely route of metastatic spread.

Main Methods:

• Clinical work-up including imaging (computed tomography).
• Cytological examination of pleural fluid, ascitic fluid, and fine needle aspiration material.
• Electron microscopy and biochemical analysis (human chorionic gonadotropin levels).

Main Results:

• Confirmed metastatic germinoma in pleural effusions, ascites, and lung lesions.
• Cytology distinguished germinoma from other malignancies like carcinoma, lymphoma, and sarcoma.
• Computed tomography, elevated human chorionic gonadotropin, and electron microscopy were crucial for diagnosis.

Conclusions:

• Extracranial metastasis of primary pineal germinoma is possible, though rare.
• A ventriculoperitoneal shunt is a potential pathway for metastatic spread.
• Multimodal diagnostic approaches are essential for rare oncological presentations.