AUTHOR=Yu Xixi , Yang Mei , Wang Caixia , Wang Wanchun , Zhu Tingting , Liu Yang TITLE=Paraneoplastic pemphigus involved oral mucosa only: a case report and literature review JOURNAL=Frontiers in Medicine VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2025.1498800 DOI=10.3389/fmed.2025.1498800 ISSN=2296-858X