Bladder cancer can often be found early because it causes blood in the urine or other urinary symptoms that cause a person to see a health care provider.
In most cases, blood in the urine (called hematuria) is the first sign of bladder cancer. There may be enough blood to change the color of the urine to orange, pink, or, less often, dark red. Sometimes, the color of the urine is normal but small amounts of blood are found when a urine test (urinalysis) is done because of other symptoms or as part of a general medical check-up.
Blood may be present one day and absent the next, with the urine remaining clear for weeks or even months. But if a person has bladder cancer, at some point the blood reappears.
Usually, the early stages of bladder cancer (when it's small and only in the bladder) cause bleeding but little or no pain or other symptoms.
Blood in the urine doesn't always mean you have bladder cancer. More often it's caused by other things like an infection, benign (not cancer) tumors, stones in the kidney or bladder, or other benign kidney diseases. Still, it’s important to have it checked by a doctor so the cause can be found.
Bladder cancer can sometimes cause changes in urination, such as:
These symptoms are more likely to be caused by a urinary tract infection (UTI), bladder stones, an overactive bladder, or an enlarged prostate (in men). Still, it’s important to have them checked by a doctor so that the cause can be found and treated, if needed.
Bladder cancers that have grown large or have spread to other parts of the body can sometimes cause other symptoms, such as:
Again, many of these symptoms are more likely to be caused by something other than bladder cancer, but it’s important to have them checked.
If there's a reason to suspect you might have bladder cancer, the doctor will use one or more exams or tests to find out if it's cancer or something else.
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Last Revised: January 30, 2019