Bladder cancer accounts for approximately 90% of cancers of the urinary tract (renal pelvis, ureters, bladder, and urethra). Bladder cancer usually originates in the bladder lining, which consists of a mucous layer of surface cells that expand and deflate, smooth muscle, and a fibrous layer. Tumors are categorized as low-stage (superficial) or high-stage (muscle invasive).
Bladder cancer is two to three times more common in men and the incidence of bladder cancer increases with age. People over the age of 70 develop the disease two to three times more often then those aged 55-69 and 15 go 20 times more often than those aged 30-54.
*Information provided by Urology Channel.
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