The bladder is a hollow organ in your lower abdomen that stores urine. Bladder cancer occurs in the lining of the bladder. It is the sixth most common type of cancer in the United States.
Symptoms of bladder cancer include:
- Blood in your urine
- A frequent urge to urinate
- Pain when you urinate
- Low back pain
Smoking is a major risk factor for bladder cancer. Exposure to certain chemicals in the workplace is another. People with a family history of bladder cancer or who are older, white or male have a higher risk. More than 90 percent of all bladder cancers originate in the urothelium, the inner lining of the bladder. The majority of diagnosed bladder tumors are confined to the urothelium and have not invaded the bladder muscle.