Meningeal Hemangiopericytoma: A Retrospective Study of 21 Patients with Special Review of Postoperative External Radiotherapy

Abstract

For patients with intracranial meningeal hemangiopericytoma, surgical removal followed by external radiotherapy reduced the risk of local recurrence. It was not demonstrated that postoperative radiotherapy protected against neuraxis metastasis. Radiotherapy did not protect against peripheral metastasis, which can occur up to several years after the first operation. It appears that radiotherapy after surgery for local or neuraxis recurrence did not avoid further recurrence. Radiosurgery is indicated for recurrent tumors measuring less than 25 mm in greatest diameter. For intradural extramedullary localizations, the value of postoperative radiotherapy is more questionable.