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Urine Test May Detect Kidney Cancer Recurrence


— March 28, 2025

A simple urine test may help detect kidney cancer recurrence early.


Medical advancements are constantly evolving, which is necessary to address the many forms of disease that, unfortunately, people could experience over the course of their lifetimes. Now, a team of researchers are reporting that a new test may change the way doctors detect kidney cancer recurrence. They’ve have been exploring a simple urine test that could help patients avoid repeated CT scans while still keeping a close watch on their health. This test looks at specific sugar molecules in urine, which appear to provide important clues about whether cancer has returned.

Currently, people who have had kidney cancer removed must undergo regular scans to check for any signs of the disease coming back. These scans, while effective, can be stressful, expensive, and sometimes inconclusive. Small abnormalities might be detected that require additional scans to monitor, even when they may not be cancerous. The possibility of a urine test that could replace some of these scans has caught the attention of doctors worldwide.

Urine Test May Detect Kidney Cancer Recurrence
Photo by Anna Tarazevich from Pexels

The study, which involved over a hundred patients in multiple countries, aimed to determine whether this test could reliably detect cancer recurrence. The research focused on clear cell renal cell carcinoma, the most common type of kidney cancer. Patients provided urine samples every few months, which were then analyzed to measure specific sugar molecules. These sugars, known as glycosaminoglycans, form unique patterns when cancer is present.

After following the patients for over a year, researchers found that the test correctly identified cancer recurrence in 90% of cases. Additionally, when the test results were negative, there was a 97% chance that the patient remained cancer-free. This level of accuracy is comparable to traditional CT scans, making the test a promising alternative for monitoring patients after surgery.

One of the key benefits of this test is that it could significantly reduce the number of scans patients need. CT scans expose patients to radiation and can sometimes cause unnecessary worry if small, unclear abnormalities are detected. With a reliable urine test, doctors could have another tool to assess a patient’s condition without requiring as many scans. This could mean fewer hospital visits, lower costs, and less stress for those recovering from kidney cancer.

The research team is continuing to refine the test and gather more data. A second group of patients is currently being studied to confirm the initial findings. If the results hold, the test could eventually become a routine part of post-surgery monitoring. However, more research is needed to determine whether detecting cancer earlier with this method improves long-term survival rates.

While this test is still in development, it represents an exciting step forward in cancer care. It highlights the potential of urine-based diagnostics, which are non-invasive and easy to administer. In the future, similar tests could be developed for other types of cancer, offering patients a less invasive way to monitor their health. As research continues, doctors and patients alike are hopeful that this approach will lead to improved care and better outcomes for those at risk of cancer recurrence.

Sources:

Simple urine test may spare kidney cancer patients from invasive scans

Urine test could halve post-op scans for kidney cancer

Urine test ‘could help spot recurring kidney cancer’, researchers suggest

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