Types of cancer
Bladder cancer forms in tissues of the bladder (the organ that stores urine). Most bladder cancers are transitional cell carcinomas (cancer that begins in cells that normally make up the inner lining of the bladder). Other types include squamous cell carcinoma (cancer that begins in thin, flat cells) and adenocarcinoma (cancer that begins in cells that make and release mucus and other fluids). The cells that form squamous cell carcinoma and adenocarcinoma develop in the inner lining of the bladder as a result of chronic irritation and inflammation.
Estimated new cases and deaths from bladder cancer in the United States in 2009:
New cases: 70,980
Deaths: 14,330
To learn more about bladder cancer, visit the National Cancer Institute web site at: http://www.cancer.gov/cancertopics/types/bladder
