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Bladder cancer is a type of cancer that begins in your bladder — a balloon-shaped organ in your pelvic area that stores urine.
Bladder cancer begins most often in the cells that line the inside of the bladder. Bladder cancer typically affects older adults, though it can occur at any age.
The great majority of bladder cancers are diagnosed at an early stage — when bladder cancer is highly treatable. However, even early-stage bladder cancer is likely to recur. For this reason, bladder cancer survivors often undergo follow-up tests for years after treatment to look for bladder cancer recurrence.
The bladder is a hollow organ in the lower part of the abdomen that stores urine until it is passed out of the body.
The most common type of bladder cancer is transitional cell carcinoma, which begins in urothelial cells that line the inside of the bladder. Urothelial cells are transitional cells, which are able to change shape and stretch when the bladder is full. This type of cancer is also called urothelial carcinoma. Other types of bladder cancer include squamous cell carcinoma (cancer that begins in thin, flat cells lining the bladder) and adenocarcinoma (cancer that begins in cells that make and release mucus and other fluids).
People who smoke have an increased risk of bladder cancer. Being exposed to certain chemicals and having chronic bladder infections can also increase the risk of bladder cancer.
The most common sign of bladder cancer is blood in the urine. Bladder cancer is often diagnosed at an early stage, when the cancer is easier to treat.
There are three types of bladder cancer that begin in cells in the lining of the bladder. These cancers are named for the type of cells that become malignant (cancerous):
Transitional cell carcinoma: Cancer that begins in cells in the innermost tissue layer of the bladder. These cells are able to stretch when the bladder is full and shrink when it is emptied. Most bladder cancers begin in the transitional cells. Transitional cell carcinoma can be low-grade or high-grade:
- Low-grade transitional cell carcinoma often recurs (comes back) after treatment, but rarely spreads into the muscle layer of the bladder or to other parts of the body.
- High-grade transitional cell carcinoma often recurs (comes back) after treatment and often spreads into the muscle layer of the bladder, to other parts of the body, and to lymph nodes. Almost all deaths from bladder cancer are due to high-grade disease.
Squamous cell carcinoma: Cancer that begins in squamous cells, which are thin, flat cells that may form in the bladder after long-term infection or irritation.
Adenocarcinoma: Cancer that begins in glandular (secretory) cells that are found in the lining of the bladder. This is a very rare type of bladder cancer.
Cancer that is in the lining of the bladder is called superficial bladder cancer. Cancer that has spread through the lining of the bladder and invades the muscle wall of the bladder or has spread to nearby organs and lymph nodes is called invasive bladder cancer.
Smoking can affect the risk of bladder cancer.
Anything that increases your chance of getting a disease is called a risk factor. Having a risk factor does not mean that you will get cancer; not having risk factors doesn’t mean that you will not get cancer. Talk to your doctor if you think you may be at risk for bladder cancer.
- Other risk factors for bladder cancer include:
- Using tobacco, especially smoking cigarettes.
- Having a family history of bladder cancer.
- Having certain changes in the genes that are linked to bladder cancer.
- Being exposed to paints, dyes, metals, or petroleum products in the workplace.
- Past treatment with radiation therapy to the pelvis or with certain anticancer drugs, such as cyclophosphamide or ifosfamide.
- Taking Aristolochia fangchi, a Chinese herb.
- Drinking water from a well that has high levels of arsenic.
- Drinking water that has been treated with chlorine.
- Having a history of bladder infections, including bladder infections caused by Schistosoma haematobium.
- Using urinary catheters for a long time.
Older age is a risk factor for most cancers. The chance of getting cancer increases as you get older.
Signs and symptoms of bladder cancer include blood in the urine and pain during urination.
These and other signs and symptoms may be caused by bladder cancer or by other conditions. Check with your doctor if you have any of the following:
- Blood in the urine (slightly rusty to bright red in color).
- Frequent urination.
- Pain during urination.
- Lower back pain.
Tests that examine the urine and bladder are used to help detect (find) and diagnose bladder cancer.
The following tests and procedures may be used:
Physical exam and history : An exam of the body to check general signs of health, including checking for signs of disease, such as lumps or anything else that seems unusual. A history of the patient’s health habits and past illnesses and treatments will also be taken.
Internal exam : An exam of the vagina and/or rectum. The doctor inserts lubricated, gloved fingers into the vagina and/or rectum to feel for lumps.
Urinalysis : A test to check the color of urine and its contents, such as sugar, protein, red blood cells, and white blood cells.
Urine cytology : A laboratory test in which a sample of urine is checked under a microscope for abnormal
Cystoscopy : A procedure to look inside the bladder and urethra to check for abnormal areas. A cystoscope is inserted through the urethra into the bladder. A cystoscope is a thin, tube-like instrument with a light and a lens for viewing. It may also have a tool to remove tissue samples, which are checked under a microscope for signs of cancer.
A cystoscope (a thin, tube-like instrument with a light and a lens for viewing) is inserted through the urethra into the bladder. Fluid is used to fill the bladder. The doctor looks at an image of the inner wall of the bladder on a computer monitor.
Intravenous pyelogram (IVP) : A series of x-rays of the kidneys, ureters, and bladder to find out if cancer is present in these organs. A contrast dye is injected into a vein. As the contrast dye moves through the kidneys, ureters, and bladder, x-rays are taken to see if there are any blockages.
Biopsy : The removal of cells or tissues so they can be viewed under a microscope by a pathologist to check for signs of cancer. A biopsy for bladder cancer is usually done during cystoscopy. It may be possible to remove the entire tumor during biopsy.
Certain factors affect prognosis (chance of recovery) and treatment options.
The prognosis (chance of recovery) depends on the following:
- The stage of the cancer (whether it is superficial or invasive bladder cancer, and whether it has spread to other places in the body). Bladder cancer in the early stages can often be cured.
- The type of bladder cancer cells and how they look under a microscope.
- Whether there is carcinoma in situ in other parts of the bladder.
- The patient’s age and general health.
If the cancer is superficial, prognosis also depends on the following:
- How many tumors there are.
- The size of the tumors.
- Whether the tumor has recurred (come back) after treatment.
Treatment options depend on the stage of bladder cancer.
After bladder cancer has been diagnosed, tests are done to find out if cancer cells have spread within the bladder or to other parts of the body.
The process used to find out if cancer has spread within the bladder lining and muscle or to other parts of the body is called staging. The information gathered from the staging process determines the stage of the disease. It is important to know the stage in order to plan treatment. The following tests and procedures may be used in the staging process:
CT scan (CAT scan) : A procedure that makes a series of detailed pictures of areas inside the body, taken from different angles. The pictures are made by a computer linked to an x-ray A dye may be injected into a vein or swallowed to help the organs or tissues show up more clearly. This procedure is also called computed tomography, computerized tomography, or computerized axial tomography. To stage bladder cancer, the CT scan may take pictures of the chest, abdomen, and pelvis.
MRI (magnetic resonance imaging) : A procedure that uses a magnet, radio waves, and a computer to make a series of detailed pictures of areas inside the body. This procedure is also called nuclear magnetic resonance imaging (NMRI).
Chest x-ray : An x-ray of the organs and bones inside the chest. An x-ray is a type of energy beam that can go through the body and onto film, making a picture of areas inside the body.
Bone scan : A procedure to check if there are rapidly dividing cells, such as cancer cells, in the bone. A very small amount of radioactive material is injected into a vein and travels through the bloodstream. The radioactive material collects in the bones and is detected by a scanner.
There are three ways that cancer spreads in the body.
Cancer can spread through tissue, the lymph system, and the blood:
- The cancer spreads from where it began by growing into nearby areas.
- Lymph system. The cancer spreads from where it began by getting into the lymph system. The cancer travels through the lymph vessels to other parts of the body.
- The cancer spreads from where it began by getting into the blood. The cancer travels through the blood vessels to other parts of the body.
Cancer may spread from where it began to other parts of the body.
When cancer spreads to another part of the body, it is called metastasis. Cancer cells break away from where they began (the primary tumor) and travel through the lymph system or blood.
- Lymph system. The cancer gets into the lymph system, travels through the lymph vessels, and forms a tumor (metastatic tumor) in another part of the body.
- The cancer gets into the blood, travels through the blood vessels, and forms a tumor (metastatic tumor) in another part of the body.
The metastatic tumor is the same type of cancer as the primary tumor. For example, if bladder cancer spreads to the bone, the cancer cells in the bone are actually bladder cancer cells. The disease is metastatic bladder cancer, not bone cancer.
The following stages are used for bladder cancer:
Stage 0 (Papillary Carcinoma and Carcinoma in Situ)
Stage 0 bladder cancer. Abnormal cells are found in the tissue lining the inside of the bladder. Stage 0a may look like tiny mushrooms growing from the lining of the bladder. Stage 0is is a flat tumor on the tissue lining the inside of the bladder.
In stage 0, abnormal cells are found in tissue lining the inside of the bladder. These abnormal cells may become cancer and spread into nearby normal tissue. Stage 0 is divided into stage 0a and stage 0is, depending on the type of the tumor:
Stage 0a is also called papillary carcinoma, which may look like tiny mushrooms growing from the lining of the bladder.
Stage 0is is also called carcinoma in situ, which is a flat tumor on the tissue lining the inside of the bladder.
Stage I bladder cancer. Cancer has spread to the layer of connective tissue next to the inner lining of the bladder.
In stage I, cancer has formed and spread to the layer of connective tissue next to the inner lining of the bladder.
Stage II bladder cancer. Cancer has spread to the layers of muscle tissue of the bladder.
In stage II, cancer has spread to the layers of muscle tissue of the bladder.
Stage III bladder cancer. Cancer has spread from the bladder to the layer of fat surrounding it. It may also have spread to the prostate and/or seminal vesicles in men or the uterus and/or vagina in women.
In stage III, cancer has spread from the bladder to the layer of fat surrounding it and may have spread to the reproductive organs (prostate, seminal vesicles, uterus, or vagina).
Stage IV bladder cancer. Cancer has spread from the bladder to (a) the wall of the abdomen or pelvis, (b) one or more lymph nodes, and/or (c) other parts of the body, such as the lung, liver, or bone.
In stage IV, one or more of the following is true:
- Cancer has spread from the bladder to the wall of the abdomen or pelvis.
- Cancer has spread to one or more lymph nodes.
- Cancer has spread to other parts of the body, such as the lung, bone, or liver.
There are different types of treatment for patients with bladder cancer.
Different types of treatment are available for patients with bladder cancer. Some treatments are standard (the currently used treatment), and some are being tested in clinical trials. A treatment clinical trial is a research study meant to help improve current treatments or obtain information on new treatments for patients with cancer. When clinical trials show that a new treatment is better than the standard treatment, the new treatment may become the standard treatment. Patients may want to think about taking part in a clinical trial. Some clinical trials are open only to patients who have not started treatment.
Four types of standard treatment are used:
One of the following types of surgery may be done:
Transurethral resection (TUR) with fulguration: Surgery in which a cystoscope (a thin lighted tube) is inserted into the bladder through the urethra. A tool with a small wire loop on the end is then used to remove the cancer or to burn the tumor away with high-energy electricity. This is known as fulguration.
Radical cystectomy: Surgery to remove the bladder and any lymph nodes and nearby organs that contain cancer. This surgery may be done when the bladder cancer invades the muscle wall, or when superficial cancer involves a large part of the bladder. In men, the nearby organs that are removed are the prostate and the seminal vesicles. In women, the uterus, the ovaries, and part of the vagina are removed. Sometimes, when the cancer has spread outside the bladder and cannot be completely removed, surgery to remove only the bladder may be done to reduce urinary symptoms caused by the cancer. When the bladder must be removed, the surgeon creates another way for urine to leave the body.
Partial cystectomy: Surgery to remove part of the bladder. This surgery may be done for patients who have a low-grade tumor that has invaded the wall of the bladder but is limited to one area of the bladder. Because only a part of the bladder is removed, patients are able to urinate normally after recovering from this surgery. This is also called segmental cystectomy.
Urinary diversion: Surgery to make a new way for the body to store and pass urine.
Even if the doctor removes all the cancer that can be seen at the time of the surgery, some patients may be given chemotherapy after surgery to kill any cancer cells that are left. Treatment given after surgery, to lower the risk that the cancer will come back, is called adjuvant therapy.
Radiation therapy is a cancer treatment that uses high-energy x-rays or other types of radiation to kill cancer cells or keep them from growing. There are two types of radiation therapy. External radiation therapy uses a machine outside the body to send radiation toward the cancer. Internal radiation therapy uses a radioactive substance sealed in needles, seeds, wires, or catheters that are placed directly into or near the cancer. The way the radiation therapy is given depends on the type and stage of the cancer being treated.
Chemotherapy is a cancer treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. When chemotherapy is taken by mouth or injected into a vein or muscle, the drugs enter the bloodstream and can reach cancer cells throughout the body (systemic chemotherapy). When chemotherapy is placed directly into the cerebrospinal fluid, an organ, or a body cavity such as the abdomen, the drugs mainly affect cancer cells in those areas (regional chemotherapy). For bladder cancer, regional chemotherapy may be intravesical (put into the bladder through a tube inserted into the urethra). The way the chemotherapy is given depends on the type and stage of the cancer being treated. Combination chemotherapy is treatment using more than one anticancer drug.
Biologic therapy is a treatment that uses the patient’s immune system to fight cancer. Substances made by the body or made in a laboratory are used to boost, direct, or restore the body’s natural defenses against cancer. This type of cancer treatment is also called biotherapy or immunotherapy.
Bladder cancer may be treated with an intravesical biologic therapy called BCG (bacillus Calmette-Guérin). The BCG is given in a solution that is placed directly into the bladder using a catheter (thin tube).
New types of treatment are being tested in clinical trials.
Patients may want to think about taking part in a clinical trial.
For some patients, taking part in a clinical trial may be the best treatment choice. Clinical trials are part of the cancer research process. Clinical trials are done to find out if new cancer treatments are safe and effective or better than the standard treatment.
Many of today’s standard treatments for cancer are based on earlier clinical trials. Patients who take part in a clinical trial may receive the standard treatment or be among the first to receive a new treatment.
Patients who take part in clinical trials also help improve the way cancer will be treated in the future. Even when clinical trials do not lead to effective new treatments, they often answer important questions and help move research forward.
Patients can enter clinical trials before, during, or after starting their cancer treatment.
Some clinical trials only include patients who have not yet received treatment. Other trials test treatments for patients whose cancer has not gotten better. There are also clinical trials that test new ways to stop cancer from recurring (coming back) or reduce the side effects of cancer treatment.
Clinical trials are taking place in many parts of the country. See the Treatment Options section that follows for links to current treatment clinical trials. These have been retrieved from NCI’s listing of clinical trials.
Follow-up tests may be needed.
Some of the tests that were done to diagnose the cancer or to find out the stage of the cancer may be repeated. Some tests will be repeated in order to see how well the treatment is working. Decisions about whether to continue, change, or stop treatment may be based on the results of these tests.
Some of the tests will continue to be done from time to time after treatment has ended. The results of these tests can show if your condition has changed or if the cancer has recurred (come back). These tests are sometimes called follow-up tests or check-ups.
Bladder cancer often recurs (comes back), even when the cancer is superficial. Surveillance of the urinary tract to check for recurrence is standard after a diagnosis of bladder cancer. Surveillance is closely watching a patient’s condition but not giving any treatment unless there are changes in test results that show the condition is getting worse. During active surveillance, certain exams and tests are done on a regular schedule. Surveillance may include ureteroscopy and imaging tests.
This content was used with permission from the National Cancer Institute as the source.
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