Giant bilateral renal metastases from a meningeal hemangiopericytoma

Area of Science:

• Neurosurgery
• Oncology
• Radiology

Background:

• Meningeal hemangiopericytoma (HPC) is a rare tumor with a propensity for late recurrence and metastasis.
• Long-term surveillance is essential for patients with a history of meningeal HPC.

Observation:

• A 47-year-old male with a history of meningeal HPC presented with bilateral renal masses.
• Imaging revealed additional masses consistent with HPC metastasis.
• The patient had undergone multiple neurosurgical operations and radiosurgery for his initial intracranial tumor.

Findings:

• Histopathology confirmed renal masses as HPC metastasis.
• The patient underwent successful bilateral nephron-sparing surgery.
• Follow-up imaging identified and led to treatment of hepatic lesions, also consistent with HPC metastasis.

Implications:

• A history of meningeal HPC should prompt suspicion for renal metastasis in patients presenting with renal masses.
• Abdominal imaging should be incorporated into the surveillance protocols for patients with a history of meningeal HPC.
• Surgical intervention remains the primary treatment modality for metastatic HPC.