Ureter

What the Ureter Is and How It Works

The ureters are two thin tubes, each about 8 to 12 inches (20 to 30 centimeters) long, that carry urine from the kidneys to the bladder. Urine is made by the kidneys as they filter waste and extra water from the blood. The ureters use smooth muscle walls that tighten and relax in waves, pushing urine downward toward the bladder. This process helps keep urine flowing in one direction and prevents it from backing up.

The ureters enter the bladder at the back, where they open at small slits called ureteric orifices. This arrangement helps prevent urine from flowing backward from the bladder into the ureters, which is especially important to avoid infections.

Why the Ureter Matters in Cancer Care

The ureters can be affected by cancers that start in or spread to the urinary tract, such as urothelial carcinoma, which may involve the lining of the kidney, ureter, or bladder. When cancer affects the ureter, it can cause narrowing or blockage, which may lead to urine buildup and infections. In some cases, surgery to remove the affected ureter and kidney, called nephroureterectomy or ureteronephrectomy, is part of treatment.

Understanding the ureter’s role helps patients and caregivers recognize why certain tests or surgeries are recommended and how these treatments aim to remove cancer while preserving as much normal function as possible.

What Patients Might Experience or Hear About

Patients may hear about the ureters during discussions of symptoms like pain, urinary tract infections, or changes in urination. Tests such as urine tests, X-rays, or ureteroscopy (using a thin camera to look inside the ureter) may be ordered to check for blockages, stones, or tumors.

Terms like nephroureterectomy may appear in medical notes or treatment plans. This surgery removes the kidney and ureter on one side and is used when cancer involves both structures. Knowing this can help patients ask informed questions about their care.

Common Causes of Ureter Problems

Besides cancer, ureters can be narrowed or blocked by kidney stones, infections, or other conditions like endometriosis or certain infections such as tuberculosis. When urine flow is blocked, it can cause pain, infections, or kidney damage if untreated.

How to Use This Information

Seeing the word "ureter" in medical reports or hearing it during visits can feel confusing. It’s important to ask your care team what it means in your specific situation. The term itself does not mean you have cancer or a serious problem—it simply refers to this part of the urinary system. Your doctors use this term to explain tests, findings, or treatments related to urine flow and kidney health.

This information is educational and not a substitute for medical advice. Always discuss your test results, symptoms, and treatment options with your healthcare providers to understand what the ureter’s condition means for you personally.

Next Steps for Patients and Caregivers

If you come across the term ureter in your medical records or conversations, consider asking your care team questions like: What is the condition of my ureters? Are they affected by my cancer or other health issues? What tests will be done to check them? Could surgery or other treatments involve the ureters? Understanding these answers can help you feel more informed and involved in your care decisions.