AUTHOR=Li Tengxiang , Yao Xinsen , He Ruimin , Xue Xian , Wang Shuai , Chen Jinhu , Qiu Qingtao , Yin Yong , Tang Quan TITLE=Proton stereotactic centralized ablative radiation therapy for treating bulky tumor: a treatment plan study JOURNAL=Frontiers in Oncology VOLUME=15 YEAR=2025 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2025.1474327 DOI=10.3389/fonc.2025.1474327 ISSN=2234-943X