The most common symptom of bladder cancer is blood in the urine, which occurs in roughly 80% of people diagnosed with the disease. This blood is usually visible to the naked eye, painless, and comes and goes rather than appearing consistently. But bladder cancer can also show up with symptoms that feel a lot like a urinary tract infection, which is one reason it sometimes gets missed early on.
Blood in the Urine
Blood in the urine, called hematuria, is the hallmark sign. In most cases, you can see it yourself: your urine looks pink, red, or brownish, like cola. It typically shows up without any pain, which can make it easy to dismiss, especially when it disappears for days or weeks before returning. That intermittent pattern is actually characteristic of bladder cancer. Some people assume the bleeding was a one-time thing and never follow up.
In other cases, the blood is only detectable under a microscope during a routine urinalysis. This is how some bladder cancers are caught incidentally, with no other symptoms present. In one study of 138 patients with a specific early-stage form of bladder cancer (carcinoma in situ), 41% had visible blood in the urine at diagnosis, while 44% had only microscopic blood. About 26% were found entirely by accident during unrelated testing.
Any episode of visible blood in the urine warrants evaluation. For microscopic blood, current guidelines from the American Urological Association use a risk-based approach. People at lower risk may simply repeat a urine test in six months, while those at higher risk (based on age, smoking history, and other factors) are typically referred for imaging and a direct look inside the bladder with a small camera called a cystoscope.
Urinary Symptoms That Mimic a UTI
Bladder cancer can cause a cluster of urinary symptoms that feel nearly identical to a urinary tract infection: burning or pain during urination, a sudden urgent need to go, urinating more often than usual, and getting up multiple times at night. Some people also notice a weak urine stream or difficulty starting urination. These symptoms are especially common with carcinoma in situ, a flat, aggressive form of early bladder cancer that tends to irritate the bladder lining rather than forming a visible mass. In studies, about half of people with this type had irritative urinary symptoms as a primary complaint.
The overlap with UTI symptoms is a real diagnostic challenge. As clinicians at MD Anderson Cancer Center have noted, there are no symptoms unique to either condition. Both can involve pain while urinating, urgency, frequency, and even blood cells in the urine. The key red flag is when these symptoms don’t resolve with antibiotics, or when they keep coming back. Recurrent “UTIs” that don’t respond to standard treatment, particularly in someone over 50 or with a history of smoking, should prompt further investigation.
Less Common Early Signs
Some people experience pelvic pressure, a feeling of fullness above the pubic bone, or vague lower abdominal discomfort. These symptoms are less typical and can be easy to attribute to other causes. Suprapubic pain, back or flank discomfort, and pelvic or perineal pain have all been reported, though they occur less frequently than blood in the urine or irritative symptoms. Up to 25% of people with early bladder cancer have no symptoms at all.
Symptoms of Advanced Bladder Cancer
When bladder cancer grows into the muscle wall of the bladder or spreads beyond it, additional symptoms can appear. Flank pain, felt in the back between the ribs and hip bone, can signal that a tumor is blocking one of the ureters (the tubes that drain urine from the kidneys). This blockage causes urine to back up into the kidney, creating pressure and pain on one side.
Metastatic bladder cancer, where the disease has spread to distant organs, can cause more systemic symptoms. These vary depending on where the cancer has traveled but may include bone pain, unexplained weight loss, fatigue, loss of appetite, and swelling in the feet or legs. Bone pain is particularly common when bladder cancer spreads to the skeleton, which is one of its more frequent metastatic sites.
Who Is Most at Risk
Bladder cancer is diagnosed most often between the ages of 60 and 70, and it’s about three to four times more common in men than women. Smoking is the single biggest risk factor, responsible for roughly half of all cases. Exposure to certain industrial chemicals, particularly in dye, rubber, leather, and textile manufacturing, also raises risk significantly. Chronic bladder irritation, previous radiation to the pelvis, and certain chemotherapy drugs are additional contributors.
Women with bladder cancer tend to be diagnosed at a later stage, partly because early symptoms like blood in the urine or urinary urgency are more likely to be attributed to menstruation, menopause, or UTIs before cancer is considered. This diagnostic delay is one reason outcomes tend to be worse in women despite the disease being less common.
What Happens During Evaluation
If your symptoms raise concern, the standard evaluation involves two things: imaging of the urinary tract and cystoscopy. Imaging, usually a CT scan with contrast that highlights the urinary system, checks the kidneys and ureters for abnormalities. If you can’t have a CT scan (due to kidney problems or contrast allergies), an MRI or ultrasound combined with other techniques can substitute.
Cystoscopy is the most direct way to examine the bladder. A thin, flexible scope is passed through the urethra, giving a real-time view of the bladder lining. The procedure takes just a few minutes in an office setting and uses local numbing gel. If anything abnormal is seen, a biopsy can be taken during a follow-up procedure under anesthesia to confirm whether cancer is present and how deeply it has grown.
For people with microscopic blood in the urine and a family history of kidney cancer, a known genetic tumor syndrome, or a personal or family history suggestive of Lynch syndrome, imaging of the upper urinary tract is recommended regardless of how low their overall risk category appears.