Bladder Preservation with Concurrent Chemoradiotherapy Following Complete Response to Induction Systemic Therapy in Patients with Muscle-Invasive Bladder Cancer: A Review of the Existing Literature. - Ntoumas, Georgios Nikiforos; Kougioumtzopoulou, Andromachi; Desse, Dimitra; Fragkoulis, Charalambos; Papadopoulos, Georgios; Kostouros, Efthymios; Michaletou, Dimitra; Kouloulias, Vassileios; Zygogianni, Anna; Georgakopoulos, Ioannis (Cancers, 2026)