Survival and prognostic factors of anaplastic hemangiopericytoma/solitary fibrous tumor grade III

In this NCDB cohort of intracranial grade III SFT/HPC, improved overall survival was associated with younger age, private insurance status, and treatment with surgery alone or surgery combined with radiation therapy. Chemotherapy was not associated with a survival benefit. Interpretation of treatment effects should be cautious, given the potential for selection bias in chemotherapy utilization and the risk of immortal time bias analyses of radiotherapy. Continued advances in therapeutic strategies are needed to further improve survival in this rare and clinically devastating disease.