AUTHOR=Lin Qian , Huang Jun , Chen Yuanyuan , Wu Xiaoli , Ma Yuhua , Yang Qing , Long Pan , Chen Xin TITLE=Cytological identification of Blastocystis hominis in the ascites of a patient with rectal carcinoma: a case report JOURNAL=Frontiers in Medicine VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2025.1539661 DOI=10.3389/fmed.2025.1539661 ISSN=2296-858X