Bladder Cancer

by National Cancer Institute

Each year in the United States, bladder cancer is diagnosed in 38,000 men and 15,000 women. This is the fourth most common type of cancer in men and the eighth most common in women.

This booklet discusses possible causes, symptoms, diagnosis, treatment, and rehabilitation. It also has information to help patients cope with bladder cancer.

Research is increasing what we know about bladder cancer. Scientists are learning more about its causes. They are exploring new ways to prevent, detect, diagnose, and treat this disease. Because of research, people with bladder cancer have an improved quality of life and less chance of dying from this disease.

The Bladder

The bladder is a hollow organ in the lower abdomen. It stores urine, the liquid waste produced by the kidneys. Urine passes from each kidney into the bladder through a tube called a ureter.

An outer layer of muscle surrounds the inner lining of the bladder. When the bladder is full, the muscles in the bladder wall can tighten to allow urination. Urine leaves the bladder through another tube, the urethra.

Bladder Cancer: Who's at Risk?

No one knows the exact causes of bladder cancer. However, it is clear that this disease is not contagious. No one can "catch" cancer from another person.

People who get bladder cancer are more likely than other people to have certain risk factors. A risk factor is something that increases a person's chance of developing the disease.

Still, most people with known risk factors do not get bladder cancer, and many who do get this disease have none of these factors. Doctors can seldom explain why one person gets this cancer and another does not.

Studies have found the following risk factors for bladder cancer:

Age. The chance of getting bladder cancer goes up as people get older. People under 40 rarely get this disease.

Tobacco. The use of tobacco is a major risk factor. Cigarette smokers are two to three times more likely than nonsmokers to get bladder cancer. Pipe and cigar smokers are also at increased risk.

Occupation. Some workers have a higher risk of getting bladder cancer because of carcinogens in the workplace. Workers in the rubber, chemical, and leather industries are at risk. So are hairdressers, machinists, metal workers, printers, painters, textile workers, and truck drivers.

Infections. Being infected with certain parasites increases the risk of bladder cancer. These parasites are common in tropical areas but not in the United States.

Treatment with cyclophosphamide or arsenic. These drugs are used to treat cancer and some other conditions. They raise the risk of bladder cancer.

Race. Whites get bladder cancer twice as often as African Americans and Hispanics. The lowest rates are among Asians.

Being a man. Men are two to three times more likely than women to get bladder cancer.

Family history. People with family members who have bladder cancer are more likely to get the disease. Researchers are studying changes in certain genes that may increase the risk of bladder cancer.

Personal history of bladder cancer. People who have had bladder cancer have an increased chance of getting the disease again.

Chlorine is added to water to make it safe to drink. It kills deadly bacteria. However, chlorine by-products sometimes can form in chlorinated water. Researchers have been studying chlorine by-products for more than 25 years. So far, there is no proof that chlorinated water causes bladder cancer in people. Studies continue to look at this question.

Some studies have found that saccharin, an artificial sweetener, causes bladder cancer in animals. However, research does not show that saccharin causes cancer in people.

People who think they may be at risk for bladder cancer should discuss this concern with their doctor. The doctor may suggest ways to reduce the risk and can plan an appropriate schedule for checkups.

Symptoms

Common symptoms of bladder cancer include:

• Blood in the urine (making the urine slightly rusty to deep red),
• Pain during urination, and
• Frequent urination, or feeling the need to urinate without results.

These symptoms are not sure signs of bladder cancer. Infections, benign tumors, bladder stones, or other problems also can cause these symptoms. Anyone with these symptoms should see a doctor so that the doctor can diagnose and treat any problem as early as possible. People with symptoms like these may see their family doctor or a urologist, a doctor who specializes in diseases of the urinary system.

Diagnosis

If a patient has symptoms that suggest bladder cancer, the doctor may check general signs of health and may order lab tests. The person may have one or more of the following procedures:

Physical exam — The doctor feels the abdomen and pelvis for tumors. The physical exam may include a rectal or vaginal exam.

Urine tests — The laboratory checks the urine for blood, cancer cells, and other signs of disease.

Intravenous pyelogram — The doctor injects dye into a blood vessel. The dye collects in the urine, making the bladder show up on x-rays.

Cystoscopy — The doctor uses a thin, lighted tube (cystoscope) to look directly into the bladder. The doctor inserts the cystoscope into the bladder through the urethra to examine the lining of the bladder. The patient may need anesthesia for this procedure.

The doctor can remove samples of tissue with the cystoscope. A pathologist then examines the tissue under a microscope. The removal of tissue to look for cancer cells is called a biopsy. In many cases, a biopsy is the only sure way to tell whether cancer is present. For a small number of patients, the doctor removes the entire cancerous area during the biopsy. For these patients, bladder cancer is diagnosed and treated in a single procedure.

A patient who needs a biopsy may want to ask the doctor some of the following questions:

• Why do I need to have a biopsy?
• How long will it take? Will I be awake? Will it hurt?
• How soon will I know the results?
• Are there any risks? What are the chances of infection or bleeding after the biopsy?
• If I do have cancer, who will talk with me about treatment? When?

About the Author

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