Hemangiopericytomas are most commonly found in the meninges, lower extremities, retroperitoneum, pelvis, lungs, and pleura.

[3] Hemangiopericytomas are tumors that are derived from specialized spindle shaped cells called pericytes, which line capillaries.

[4] Hemangiopericytoma is an aggressive mesenchymally derived tumor with oval nuclei with scant cytoplasm.

They have a grade 2 or 3 biological behavior, and need to be distinguished from benign meningiomas because of their high rate of recurrence (68.2%) and metastases.Computerized tomography and magnetic resonance imaging are not effective methods for diagnosis of hemangiocytomas.

[9] Radiotherapy does not appear to provide a significant survival benefit but is recommended for use in patients with tumors greater than 5 cm in diameter or with inadequate resection margins after surgery.