Bladder cancer is one of the most common cancers, affecting approximately 68,000 adults in the United States every year. Bladder cancer happens more in men than it does in women and usually affects older adults as well, though it can happen at any age. In addition, bladder cancer most often starts in the cells (urothelial cells) that line the inside of your bladder — the hollow, muscular organ in your lower abdomen that stores the urine. Although it’s most common in the bladder, this same type of cancer can happen in other parts of the urinary tract drainage system.
About seven out of every 10 bladder cancers diagnosed start out at an early stage — when bladder cancer is highly treatable. However, even early-stage bladder cancer may recur in the bladder. For this exact reason, people with bladder cancer usually need follow-up tests for years after the treatment to look for bladder cancer that recurs or advances to a higher stage.