AUTHOR=Zhou Leqing , Huang Chuyang , Sun Sheng , Ning Keping , Tang Shan TITLE=Kidney sparing surgery versus radical nephroureterectomy in upper tract urothelial carcinoma: a meta-analysis and systematic review JOURNAL=Frontiers in Oncology VOLUME=Volume 15 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2025.1448079 DOI=10.3389/fonc.2025.1448079 ISSN=2234-943X