• Neurosurgery · Feb 2013

    Intracranial hemangiopericytoma and the role of radiation therapy: a population based analysis.

    • Amol J Ghia, Pamela K Allen, Anita Mahajan, Marta Penas-Prado, Ian E McCutcheon, and Paul D Brown.
    • Department of Radiation Oncology, The University of Texas, MD Anderson Cancer Center, Houston, Texas 77030, USA. ajghia@mdanderson.org
    • Neurosurgery. 2013 Feb 1;72(2):203-9.

    BackgroundIntracranial hemangiopericytoma (HPC) is a rare malignancy for which treatment recommendations vary.ObjectiveWe sought to characterize outcomes of HPC patients treated with postoperative external beam radiotherapy (PORT).MethodsA retrospective analysis was conducted using the Surveillance, Epidemiology and End Results (SEER) Program of the US National Cancer Institute. We identified patients with intracranial hemangiopericytoma who underwent surgery alone or PORT.ResultsWe identified 88 patients with a diagnosis of HPC between 1982 and 2009 treated with surgery alone or PORT. The majority of patients were female (53%) and white (84%) with a median age of 50.5 years (range, 0-92 years). Gross total resection (GTR) was achieved in 55%, and PORT was delivered to 48% of the entire cohort. The median overall survival (OS) and cause-specific survival (CSS) were 111 months and 161 months, respectively. On univariate analysis, age older than 50 years correlated with poor OS (hazard ratio [HR]: 3.43; 95% confidence interval [CI]: 1.70-6.95; P = .001) and CSS (HR: 2.77; 95% CI: 1.18-6.48; P = .019). On multivariate analysis (MVA), age >50 years correlated with poor OS (HR: 3.69; 95% CI: 1.72-7.93; P = .001) and CSS (HR: 2.67; 95% CI: 1.08-6.59; P = .034). On MVA, GTR correlated with improved OS (HR: 0.28; 95% CI: 0.11-0.71; P = .007) and CSS (HR: 0.23; 95% CI: 0.07-0.76; P = .016). In addition, PORT correlated with improved OS (MVA HR: 0.02; 95% CI: 0.00-0.31; P = .005) and CSS (MVA HR: 0.02; 95% CI: 0.00-0.45; P = .015). Patients undergoing STR with PORT compared favorably with those undergoing GTR alone with respect to OS (HR: 0.43; 95% CI: 0.15-1.26; P = .13) and CSS (HR: 0.51; 95% CI: 0.15-1.78; P = .29).ConclusionIn intracranial HPC, both PORT and GTR independently correlate with improved OS and CSS.

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