Bladder cancer is abnormal growth of the cells that line the inside of the bladder. The growth is called a bladder tumor.
A tumor may be either invasive or noninvasive. A noninvasive tumor is usually a small, wartlike growth that has not yet grown into the bladder wall. If a tumor is invasive, the cancer cells may spread into the bladder wall and then to other organs through the bloodstream and lymphatic system.
Bladder cancer affects men 3 times more often than women. Bladder tumors are most likely to develop in white men over the age of 50.
In most cases, bladder tumors occur when the cells lining the urinary tract are exposed to cancer-causing chemicals in the urine. Chemicals in the urine can come from:
You have a higher risk of bladder cancer if members of your family have had it.
Symptoms of bladder cancer are:
Your healthcare provider will ask about your symptoms and examine you. Your urine will be tested for the presence of blood or infection. Your provider may also look for abnormal cells in the urine.
You will probably have an exam called a cystoscopy. During this exam your provider passes a slim, flexible, lighted tube called a cystoscope through the urethra and into the bladder to look inside your bladder. The urethra is the passageway that carries urine from your bladder to outside the body.
During this test your provider will probably do a biopsy. This involves removing a small piece of bladder lining tissue. The tissue is checked to see if it is cancerous.
You may also have the following types of X-rays or scans:
If cancer is found, you may have more tests to see if cancer cells have spread within the bladder or to other parts of the body. For example, you may have a chest X-ray or a bone scan.
Treatment of a bladder tumor depends first on whether it is invasive. For an early, noninvasive tumor, your healthcare provider will try to destroy the tumor by burning it off with a high-frequency electrical current passed through a cystoscope. This process is called fulguration. For small tumors this may be the only treatment that is needed. In another process, chemicals or other medicines may be put into your bladder to destroy the cancer cells.
Large tumors that have gotten into the muscle of the bladder wall must be surgically removed. Sometimes all or part of the bladder is removed. This type of surgery is called a cystectomy. It is performed under general anesthesia. The ureters (tubes draining urine from the kidney to the bladder) are now connected to a surgically devised reservoir and then to an opening made in your abdomen. A bag is attached to this opening to collect urine. If the whole bladder is removed, the bag, or external bladder, will be permanent. In some cases a new bladder may be made from a piece of intestine.
Other treatments for invasive tumors include radiation therapy to the bladder or chemotherapy to help destroy cancer cells that may have spread beyond the bladder.
As with other forms of cancer, the treatments for bladder cancer that are most successful are those that begin before the disease has spread. This is why it is important to catch the cancer as early as possible. See your healthcare provider as soon as you detect any symptoms of bladder cancer.
If you have a noninvasive tumor (superficial bladder cancer), your chances of cure are very good. You should, however, have regular cystoscopy exams because small tumors often come back or new ones may develop.
The removal of a large invasive tumor by partial bladder resection reduces the size of the bladder. This means the bladder holds less urine than before the surgery and you will need to urinate more often.