The operation is called a transurethral resection of bladder tumour (TURBT). Your surgeon removes the tumour in your bladder through the urethra. The urethra is the tube that carries urine from the bladder to the outside of your body.
You might have TURBT to remove early bladder cancer:
You have it under general anaesthetic, which means you are asleep.
The surgeon puts a thin, flexible tube called a cystoscope into the tube where your urine comes out (your urethra).
The cystoscope has optic fibres inside it, and a light and eyepiece at one end. The surgeon can look through the eyepiece or see images on a TV screen.
The surgeon passes small instruments down the cystoscope to cut any tumours out of your bladder lining.