AUTHOR=Ding Yao , Zhou Kexue , Fu Kaiwen , Liao Xingyun , Xiong Shuanglong , Yang Chengxiang , Hu Mingyang , Liang Guanzhong , Zeng Xianghua , Li Yongsheng , Wang Donglin , Li Yan TITLE=Case Report: Personalized diagnosis and treatment strategies for three cases of cancer of unknown primary based on molecular testing techniques JOURNAL=Frontiers in Oncology VOLUME=Volume 15 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2025.1505271 DOI=10.3389/fonc.2025.1505271 ISSN=2234-943X