Bladder cancer is the abnormal growth of tissues in the bladder, an organ that lies inside the pelvis. When the cells in the bladder divide uncontrollably and produce extra tissue, they develop into a growth, also known as a tumour.
Bladder cancer that is restricted only to the lining of the bladder wall is called superficial bladder cancer. However, if the cancer spreads to the muscle wall and other organs including the lungs, liver and bone, it is known as invasive bladder cancer.
There are 3 types of bladder cancer:
This is cancer that forms in mucus-secreting glands.
This is cancer that develops from cells on the lining of organs.
This is cancer that occurs in the urinary system.
These symptoms are also present in less serious conditions such as urinary tract infections and urinary stones.
The specific cause of bladder cancer is unclear. However, various factors have been linked to the increased risk for bladder cancer. These include: