Among patients with upper tract urothelial carcinoma (UTUC), those with a history of urinary tract stones have worse cancer-specific and disease-free survival after surgery, a new study finds. Yao-Chou Tsai, MD, PhD, of Taipei Tzu Chi Hospital, The Buddhist Medical Foundation, in New Taipei City, Taiwan, and colleagues analyzed registry data from 3414 patients with UTUC who underwent radical nephroureterectomy at 21 hospitals from September 1988 to December 2023.