Urine Ductal Brush Cytology (Guided Ureteral Brush Cytology)

What Is the Purpose of This Test?

Ureteral brush cytology is often performed when doctors suspect a problem in the ureter, such as blockages, tumors, or infections. It may also be used after procedures like ureteral stents to check for complications or residual issues. Your healthcare provider will explain why this test is needed for your specific situation.

How Is the Test Performed?

During the procedure, a thin, flexible tube with a brush tip is guided through the ureter using imaging (like a CT or X-ray) to reach the area of concern. Cells collected from the brush are then examined under a microscope to identify any abnormal cells.

What Are Common Symptoms That Might Lead to This Test?

You may undergo this test if you experience symptoms like persistent pain in the side or back (flank pain), blood in urine, unexplained weight loss, or if imaging tests (like a CT scan) show suspicious findings in the ureter.

What Should You Expect Before, During, and After the Test?

Before the test, you may be asked to drink extra fluids to help flush out the urinary system. During the procedure, you’ll likely feel mild pressure or discomfort but may be given sedation if needed. Afterward, you may experience mild soreness or discomfort in the side where the procedure was done. Follow-up care will depend on your provider’s findings.