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Objectives
To evaluate variant histologies (VHs) for disease‐specific survival (DSS) in patients with invasive urothelial bladder cancer (BCa) undergoing radical cystectomy (RC).
Materials and Methods
We analysed a multi‐institutional cohort of 1082 patients treated with upfront RC for cT1‐4aN0M0 urothelial BCa at eight centres. Univariable and multivariable Cox’ regression analyses were used to...