AUTHOR=Lei Jian , Zhao Wei , He Tao , Huang Hui , Jian Huayong , Zhang Mei , Luo Xike , Gong Xiaochuan , Wang Yan 

TITLE=Challenges in diagnosing and managing sarcomatoid urothelial carcinoma of the renal pelvis: a case report

JOURNAL=Frontiers in Oncology

VOLUME=Volume 15 - 2025

YEAR=2025

URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2025.1480790

DOI=10.3389/fonc.2025.1480790

ISSN=2234-943X