Experimental group:Thulium laser endoscopic en bloc resection+internal iliac artery infusion chemotherapy+bladder radiation therapy

A single-center randomized controlled trial for comparing the efficacy and safety of thulium laser endoscopic en bloc resection followed by internal iliac artery infusion chemotherapy and radiotherapy with radical cystectomy for T2 phase muscle invasive bladder cancer patients

A single-center non randomized parallel controlled clinical study for comparing the efficacy of thulium laser endoscopic en bloc resection followed by internal iliac artery infusion chemotherapy and radiotherapy with radical cystectomy for T2 phase muscle invasive bladder cancer patients