General Information About Bladder Cancer

    Key Points for This Section    

• Bladder cancer is a disease in which malignant (cancer) cells form in the tissues of the bladder.
• Smoking, gender, and diet can affect the risk of developing bladder cancer.
• Possible signs of bladder cancer include blood in the urine or pain during urination.
• Tests that examine the urine, vagina, or rectum are used to help detect (find) and diagnose bladder cancer.
• Certain factors affect prognosis (chance of recovery) and treatment options.

The bladder is a hollow organ in the lower part of the abdomen. It is shaped like a small balloon and has a muscular wall that allows it to get larger or smaller. The bladder stores urine until it is passed out of the body. Urine is the liquid waste that is made by the kidneys when they clean the blood. The urine passes from the two kidneys into the bladder through two tubes called ureters. When the bladder is emptied during urination, the urine goes from the bladder to the outside of the body through another tube called the urethra.

    

• 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.
• 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. Glandular cells in the lining of the bladder make substances such as mucus.

The wall of the bladder is lined with cells called transitional cells and squamous cells. More than 90 percent of bladder cancers begin in the transitional cells. This type of bladder cancer is called transitional cell carcinoma. About 8 percent of bladder cancer patients have squamous cell carcinomas.

Cancer that is only in cells in the lining of the bladder is called superficial bladder cancer. The doctor might call it carcinoma in situ. This type of bladder cancer often comes back after treatment. If this happens, the disease most often recurs as another superficial cancer in the bladder.

Cancer that begins as a superficial tumor may grow through the lining and into the muscular wall of the bladder. This is known as invasive cancer. Invasive cancer may extend through the bladder wall. It may grow into a nearby organ such as the uterus or vagina (in women) or the prostate gland (in men). It also may invade the wall of the abdomen.

When bladder cancer spreads outside the bladder, cancer cells are often found in nearby lymph nodes. If the cancer has reached these nodes, cancer cells may have spread to other lymph nodes or other organs, such as the lungs, liver, or bones.

Smoking, gender, and diet can affect the risk of developing bladder cancer.

Anything that increases your chance of getting a disease is called a risk factor. Risk factors for bladder cancer include the following:

• Smoking.
• Being exposed to certain substances at work, such as rubber, certain dyes and textiles, paint, and hairdressing supplies.
• A diet high in fried meats and fat.
• Being older, male, or white.
• Having an infection caused by a certain parasite.

• Blood in the urine (slightly rusty to bright red in color).
• Frequent urination, or feeling the need to urinate without being able to do so.
• Pain during urination.
• Lower back pain.
• Tests that examine the urine, vagina, or rectum are used to help detect (find) and diagnose bladder cancer.

• 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 machine. 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.
• Urinalysis: A test to check the color of urine and its contents, such as sugar, protein, blood, and bacteria.
• Internal exam: An exam of the vagina and/or rectum. The doctor inserts gloved fingers into the vagina and/or rectum to feel for lumps.
• 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.
• Cystoscopy: A procedure to look inside the bladder and urethra to check for abnormal areas. A cystoscope (a thin, lighted tube) is inserted through the urethra into the bladder. Tissue samples may be taken for biopsy.
• 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.
• Urine cytology: Examination of urine under a microscope to check for abnormal cells.

Tests that examine the urine, vagina, or rectum are used to help detect (find) and diagnose bladder cancer.

The following tests and procedures may be used:

• 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 machine. 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.
• Urinalysis: A test to check the color of urine and its contents, such as sugar, protein, red blood cells, and white blood cells.
• Internal exam: An exam of the vagina and/or rectum. The doctor inserts gloved fingers into the vagina and/or rectum to feel for lumps.
• 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.
• 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.
• 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.
• Urine cytology: Examination of urine under a microscope to check for abnormal cells.

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.
• The patient’s age and general health.

Treatment options depend on the stage of bladder cancer.

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