1.   Bladder cancer patients undergo a procedure known as a cystoscopy to detect recurrence of disease.

2.   In the past, bladder cancer patients have undergone a procedure known as a cystoscopy, often on a regular basis, to detect a recurrence of their disease.

3.   Sternberg said that scientists had not determined the best combination of drugs to give bladder cancer patients and she expressed the belief that they should be given after surgery.

4.   Traditionally, doctors examine the cells found in urine of suspected bladder cancer patients to identify the disease.