CNS Hemangiopericytoma: A Systematic Review of 523 Patients

Background: Central nervous system (CNS) hemangiopericytomas are rare mesenchymal tumors of the brain. In the absence of randomized clinical trials or large studies, the only information we have about the natural history and the management is from isolated clinical case series. They have suggested that surgery is beneficial, with conflicting results on the role of complete resection and adjuvant radiation. We have conducted a systematic review of clinical case series of CNS hemangiopericytoma analyzing the biology of the tumor and the best follow-up and management strategy. Methods: Fifteen pertinent clinical case series on newly diagnosed CNS hemangiopericytoma were selected by a review of literature. A total of 523 patients were analyzed for age, sex, mode of recurrence and metastases, and survival after complete/incomplete resection with or without radiation. Results: The mean age was found to be 44.17 (±3.59) years. The incidence was higher in male individuals younger than 45 years and in older female individuals. Complete resection and adjuvant radiation significantly improved survival in comparison with incomplete resection and no radiation, respectively (P

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