The urine passes from the kidneys to the bladder through the ureters with a tube.

The bladder is a muscular ring structure is opened to make way for the urine. Adapts its size as it increases the volume of urine and once full, sends nerve signals to the brain that transmits the need to urinate.

Bladder cancer is more common in men than in women, as three more times. Reflecting its close relationship with smoking.

In recent years there has been an increasing number of cases in the Spanish women, a phenomenon due mainly to the increase of female smokers and incorporating it into work and industry.

It is the second in frequency among urogenital cancers, the first prostate cancer in men. In the woman occupies the first place.

Bladder cancer accounts for 2% of all cancers. It is more common in industrialized countries.