Leftover urine may predict bladder cancer recurrence
NCT ID NCT04617743
First seen Jul 14, 2026 · Last updated Jul 15, 2026 · Updated 1 time
Summary
This study investigates whether the amount of urine left in the bladder after urination (post-void residual) influences the return or worsening of non-muscle invasive bladder cancer. Researchers will follow 500 patients who have had surgery to remove bladder tumors, measuring residual urine and tracking cancer recurrence and progression over time. The goal is to see if higher residual urine volume is linked to higher recurrence rates.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- What this could lead to
- If a link is found, doctors might use residual urine measurements to better predict and monitor recurrence risk in bladder cancer patients.
- What could go wrong
- This is an observational study, so it cannot prove cause and effect. The results may not change current treatment or monitoring practices.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Health Sciences University, Dıskapi Yildirim Beyazit Training and Research Hospital
Ankara, Turkey (Türkiye)
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Health Sciences University, Tepecik Training and Research Hospital
Izmir, Turkey (Türkiye)
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Istanbul Medeniyet University
Istanbul, Turkey (Türkiye)
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