To compare upper-tract urothelial carcinoma (UTUC) and bladder urothelial carcinoma (BUC) in same-patient metachronous-(m) and synchronous-(s) UTUC and BUC using next generation sequencing.
Consecutive untreated same-patient samples of UTUC and BUC were macrodissected from unstained formalin-fixed, paraffin-embedded slides after quality control.