AUTHOR=Liu Gui-Liang , Wang Min , Zhang Min , Dai Yan , Zhang Di-Wen TITLE=Case Report: Unmasking a sporadic pediatric tumor emergency: superior vena cava syndrome JOURNAL=Frontiers in Pediatrics VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2025.1517745 DOI=10.3389/fped.2025.1517745 ISSN=2296-2360