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Radiation-induced haemorrhagic cystitis (HC) is a late complication of radiotherapy. Haematuria may be refractory to medical or endoscopic treatment. Case 1 is a patient who underwent pelvic radiotherapy for bladder cancer. The patient developed radiation-induced HC 5 years after radiotherapy. Case 2 is a patient who underwent total prostatectomy followed by salvage radiotherapy and developed radiation-induced HC 15 years later. In both cases, transarterial embolisation of the vesical arteries was performed after refractoriness to medical treatment without recurrence. Transarterial embolisation of the vesical arteries is a potential treatment option for refractory radiation-induced HC.