Organ-preservative Therapy of Bladder Cancer With Radiotherapy or Radiochemotherapy Combined With Hyperthermia

This study is testing whether adding hyperthermia (controlled heat therapy) to radiation or chemo-radiation can help preserve the bladder in people with bladder cancer who want to avoid having the bladder removed surgically. **You may be eligible if...** - You are 18 years old or older - You have been diagnosed with bladder cancer confirmed by biopsy - Your cancer has not spread to distant organs - You are well enough to perform daily activities (ECOG status 0–2) - You have provided informed consent **You may NOT be eligible if...** - You have uncontrolled heart disease or a pacemaker - You have had a heart attack recently - You have metal implants in the pelvis area that could interfere with heat treatment - You are pregnant Talk to your doctor to see if this trial is right for you.