AUTHOR=Wang Min , Lv Wanrui , Chen Xi , Cheng Ke TITLE=Combination of triple chemotherapy and sequential re-irradiation as salvage for recurrent treatment-refractory hemangiopericytoma of extraspinal dura: a case report JOURNAL=Frontiers in Oncology VOLUME=14 YEAR=2024 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2024.1405755 DOI=10.3389/fonc.2024.1405755 ISSN=2234-943X