AUTHOR=Wang Xinshuo , Zhang Yifan , Fan Guangyan , Wu Honglei , Qi Xing , Cui Xiujie , Zhou Chengjun TITLE=Case Report: A case of synchronous multiple early gastric cancer with a microsatellite instability-high phenotype JOURNAL=Frontiers in Oncology VOLUME=15 YEAR=2025 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2025.1527495 DOI=10.3389/fonc.2025.1527495 ISSN=2234-943X