The urinary bladder is an empty organ in the lower
abdomen. It preserves urine, the liquid waste generated
by the kidneys. Urine passes from kidney into the
bladder via a tube known as ureter.
An external layer of muscle surrounds the inner lining
of the bladder. While the bladder is full, the muscles
in the bladder wall can make tighter to allow urination.
Urine leaves the bladder via another tube, the urethra.
Cancer is a collection of diseases. There are more
than hundred different kinds of cancer are known. All
these have one thing in common: cells will become abnormal.
These abnormal cells develop and destroy body tissue
as well as it can spread to other parts of the body.
Healthy cells that structure
the body's tissues develop, divide, and replace themselves
in an orderly way. This strategy keeps the body in good
repair. If cells lose the capability to control their
development, they develop too quickly and without any
order. And they form too much tissue. The mass of extra
tissue is known as a tumor. Tumors can be benign or