Quick answer. Bladder cancer most often shows up as blood in the urine, which is frequently painless. Any blood in your urine should always be checked by a doctor, even if it appears just once and then stops.
Bladder cancer is a growth that starts in the lining of the bladder, the organ that stores urine. In Singapore it is seen more often in older adults and in men, and the most common early sign is blood in the urine. The reassuring point is that when bladder cancer is found early, before it has spread deeply into the bladder wall, it is often very treatable.
The challenge is that the bleeding is usually painless and may come and go, so it is easy to dismiss. This guide explains the signs, the main risk factors, how the diagnosis is made, and the treatment options available, so you know when to act and which specialist to see.
At a glance
| Type / stage | What it means | Usual approach |
|---|---|---|
| Non-muscle-invasive | Confined to the inner lining of the bladder | Removal through a scope, sometimes with medicine instilled into the bladder |
| Muscle-invasive | Has grown into the muscle wall of the bladder | Surgery to remove part or all of the bladder, often with chemotherapy |
| Advanced / spread | Has spread beyond the bladder to nodes or organs | Chemotherapy, immunotherapy, radiotherapy, supportive care |
| Low grade | Cells look close to normal, slower growing | Often monitored closely after removal |
| High grade | Cells look abnormal, more likely to spread | More active treatment and closer follow-up |
What is bladder cancer?
Bladder cancer develops when cells in the lining of the bladder grow in an abnormal, uncontrolled way and form a tumour. The most common form starts in the cells that line the inside of the bladder (urothelial cancer). It tends to affect adults over the age of 55 and is more common in men than in women.
Many bladder cancers are picked up at an early stage because the bleeding they cause prompts people to see a doctor. At this stage the cancer is often confined to the inner lining and can be treated effectively, which is why getting any urinary bleeding checked promptly matters so much.
Symptoms and signs
The signs can be subtle, and the bleeding in particular is often painless. Common symptoms include:
- Blood in the urine (haematuria) – urine may look pink, red or brownish, and the blood may come and go
- Needing to pass urine more often than usual
- A sudden, urgent need to pass urine
- A burning feeling when passing urine
- Feeling the need to urinate but passing little or nothing
In more advanced disease there may be lower-back or pelvic pain, swelling in the legs, tiredness or unintended weight loss. Because the early sign is usually just painless bleeding, it should never be ignored simply because it does not hurt.
Causes and risk factors
The exact trigger is not always known, but several factors raise the risk:
- Smoking – the single biggest risk factor for bladder cancer
- Older age, and being male
- Long-term exposure to certain industrial chemicals (for example in dye, rubber, leather and paint work)
- Repeated or long-standing bladder infections and irritation
- Previous radiotherapy or certain chemotherapy to the pelvic area
- A family history of bladder cancer
Stopping smoking is the most important step you can take to lower your risk, and it also helps reduce the chance of the cancer coming back after treatment.
How it is diagnosed
If bladder cancer is suspected, a urologist will usually arrange a combination of the following:
- Urine tests to look for blood and abnormal cells
- Cystoscopy – a thin, flexible camera is passed into the bladder to look at the lining directly; this is the key test
- Imaging such as an ultrasound, CT or MRI scan to check the bladder, kidneys and surrounding area
- Biopsy or transurethral resection – a sample or the whole visible tumour is removed through a scope and examined under the microscope to confirm the diagnosis and grade
These tests together tell the doctor whether cancer is present, how deep it goes, and how it is likely to behave, which guides treatment.
Treatment options
Treatment depends on how deep the cancer has grown and its grade. The main approaches are:
- Transurethral resection (TURBT) – removing the tumour through a scope, used for cancers confined to the lining
- Intravesical therapy – medicine (such as BCG or chemotherapy) put directly into the bladder to lower the chance of return
- Surgery to remove part or all of the bladder (cystectomy) for muscle-invasive disease, with reconstruction to manage urine drainage
- Chemotherapy, immunotherapy and radiotherapy, used alone or in combination for more advanced disease
Many of these are major procedures, and costs vary widely with the type of surgery, hospital and ward class chosen, so it is best to get a personalised estimate from your treating team. Treatment in public hospitals may be subsidised, and approved cancer treatments and hospital stays can draw on MediShield Life and, within limits, MediSave – check current details with the hospital and your insurer, as cancer treatment financing rules are reviewed periodically.
When to see a doctor and which specialist
See a doctor straight away if you notice blood in your urine, even once and even if it is painless. Blood in the urine always needs to be checked – while there are less serious causes, it can be the first sign of bladder cancer, and early assessment makes a real difference.
Seek urgent care or go to A&E if you are passing large amounts of blood or clots, are unable to pass urine at all, or feel faint, feverish and unwell. If you collapse or cannot be roused, call 995.
The specialist who diagnoses and treats bladder cancer is a urologist, often working alongside a cancer specialist for chemotherapy, immunotherapy or radiotherapy. You can find a relevant specialist through the Best Doctors Singapore directory of urologists in Singapore.
Related guides
- Best Urology Clinics in Singapore — our editorial shortlist
- urology clinics directory
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Sources
- NHS – Bladder cancer
- Mayo Clinic – Bladder cancer
- HealthHub Singapore – Cancer
- SingHealth – Urology conditions and treatments
Part of our Cancer care & screening guides · Browse all health topics