Vascular rich tumor arising from pericytes surrounding the endothelial lining of blood vessels.
Can occur in virtually any site of the body.
It is a richly vascular and highly cellular tumor that is almost invariably associated with the meninges.
Sarcomatous type tumor.
They are a type of sarcoma that derives from pericytes that surround blood vessels.
Accounts for less than 1% of brain tumors.
Majority of cases occur between 40-45 years of age.
Propensity to recur either locally or regionally.
Recurrences are generally late.
Tumors show vascularity with arteriovenous shunts.
80% of cases have hemorrhage and necrosis within the tumors.
Hstologically positive for mesenchymal marker vimentin.
Surgical resection is the preferred treatment and postoperative radiation useful when complete resection not achieved.
It is a richly vascular and highly cellular tumor that is almost invariably associated with the meninges.
They often appear much like meningiomas on imaging.
A hemangiopericytoma is also more likely to recur than typical meningioma and systemic metastasis is possible.