Wednesday, May 27, 2015

Bladder Cancer

Bladder cancer typically begins in the inner lining of the bladder, the organ that stores urine after it passes from the kidneys. Most bladder cancers are caught early, when treatments are highly successful and the disease has not spread beyond the bladder. But bladder cancer tends to come back, so regular check-ups are important.

Blood in Urine

Blood in the urine can be a sign of bladder cancer, either visible to the eye or picked up by routine testing. The urine may look darker than usual, brownish, or (rarely) bright red. Most commonly, blood in the urine is not caused by cancer, but by other causes. These include exercise, trauma, infections, blood or kidney disorders, or drugs, such as blood thinners. 

Bladder Changes

Bladder symptoms are more likely to come from conditions other than cancer. But bladder cancer can sometimes cause changes to bladder habits, including:
  • Needing to go, with little or no results
  • Having to go more often than usual
  • Painful urination
  • Difficulty urinating
Urinary tract infections or bladder stones can cause similar symptoms, but require different treatments.

Smokers are about four times more likely to get bladder cancer than people who have never smoked. Chemicals in tobacco smoke are carried from the lungs to the bloodstream, then filtered by the kidneys into urine. This concentrates harmful chemicals in the bladder, where they damage cells that can give rise to cancer.

Research suggests that certain jobs may increase your risk for bladder cancer. Metal workers, mechanics, and hairdressers are among those who may be exposed to cancer-causing chemicals. If you work with dyes, or in the making of rubber, textiles, leather, or paints, be sure to follow safety procedures to reduce contact with dangerous chemicals.

Diagnosis:There's no routine test for bladder cancer. But if you're at high risk or have symptoms, your doctor may first order a urine test. If needed, a procedure called cystoscopy lets your doctor see inside the bladder with a slender lighted tube with a camera on the end. The cystoscope can be used to remove small tissue samples (a biopsy) to be examined under a microscope. A biopsy is the best way to diagnose cancer.

Imaging

If cancer is found, imaging tests can show whether it has spread beyond the bladder. An intravenous pyelogram uses dye to outline the kidneys, bladder, and ureters, the tubes that carry urine to the bladder. CT and MRI scans give more detailed images of these, and can show the lymph nodes nearby. An ultrasound uses sound waves, instead of radiation, to produce images. Additional imaging tests look for cancer in the lungs and bone.

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