Transurethral resection (TUR) of the bladder is a surgical procedure that is used both to diagnose bladder cancer and to remove cancerous tissue from the bladder. This procedure is also called a transurethral resection for bladder tumor. General anesthesia or spinal anesthesia is often used. During surgery, a cystoscope is passed into the bladder through the urethra. A tool called a resectoscope is used to remove the cancer for biopsy and to burn away any remaining cancer cells.