AUTHOR=Dong Ruoxi , Lu Jingen , Zhou Hao , Dong Qingjun , Wang Chen TITLE=Rectal neuroendocrine tumor during anorectal surgery: three case reports and a review of the literature JOURNAL=Frontiers in Oncology VOLUME=15 YEAR=2025 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2025.1468266 DOI=10.3389/fonc.2025.1468266 ISSN=2234-943X