AUTHOR=Yang Dan-Ni , Wen Jian-Xun , Niu Yan , Hai Ling , Yang Qian , Cha Su-Na , Yan Cheng , Zhu Hong-Zhe , Jiang Ting-Wang , Yan Li , Huang Jin-Hong , Chen Hong , Zuo Xin-Ru , Zheng Wen-Qi , Hu Zhi-De TITLE=Influence of age and sex on the diagnostic accuracy of pleural fluid carcinoembryonic antigen for malignant pleural effusion: a post hoc analysis JOURNAL=Frontiers in Oncology VOLUME=Volume 15 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2025.1549621 DOI=10.3389/fonc.2025.1549621 ISSN=2234-943X