Intracranial hemangiopericytoma: treatment outcomes in a consecutive series.

OBJECTIVE

The purpose of this study was to analyse a series of patients harbouring an intracranial hemangiopericytoma (HPC) with respect to clinical presentation, treatment results and long-term follow-up outcomes.

METHODS

Clinical data were retrospectively obtained in a series of 12 patients who underwent microsurgical resection for HPC at two neurosurgical institutions between 1987 and 2004.

RESULTS

The main presenting symptoms in the seven men and five women (mean age 38 years) were headache in 50% and epileptic seizures in 33% of the patients. A Simpson grade I resection was achieved in seven patients (58%) and none of these patients developed local tumour recurrence after a mean follow-up period of 127 months (10.6 yrs). Only one of these patients received adjuvant radiotherapy. A recurrence of the HPC was observed in all patients (42%) who underwent subtotal tumour resection at first surgery (Simpson grade II or higher). Recurrences occurred after a mean period of 39 months (3.2 yrs) after primary surgery and were effectively controlled by surgical excision, radiotherapy and gamma knife radiosurgery. Two patients (17%) developed extraneural metastases which were treated by surgical excision, radiotherapy and salvage chemotherapy. Poly-chemotherapy was ineffective with respect to tumour control in this study.

CONCLUSIONS

The study emphasises the importance of total resection of HPC, defined as a Simpson grade I removal, at first surgery. Adjuvant radiotherapy is recommended after subtotal tumour resections. A life-long vigilant follow-up of these patients is mandatory.