In the past three decades, cases of the bladder in men increased more than 20%, while cases among women decreased 25%. Known predisposing factors of bladder cancer is due to chemical betanaphytilamine and xenylamine, schistosoma haematobium infection and smoking.

Tumors of the bladder sequentially from benign papilloma to invasive malignant carcinoma. Most neoplasms are kind of transitional cells, because the coated urinary transitional epithelium. Neoplasms such as papilloma starts, because that every papilloma of the bladder and appointed pramalignansi considered if known. Cell carcinoma squamosa prognosanya rarely occur and worse. Other neoplasms are adenocarcinoma.
Bladder cancer is divided by the depth level of invasifnya level: O level mucosa, sub mucosa of grade A, level B Muscle, Fat Perivisial Level C, Level D Lymph Glands.

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.