Cancer of the urinary bladder is the fourth most common malignancy among men, and
the eighth most frequent among women. An average of 260,000 new cases of urinary bladder cancer are diagnosed worldwide every year.
Approximately 90% of these cancers are of "Transitional Cell Carcinoma" (TCC) type,
originating in the epithelial cells (the internal lining) of the bladder wall.
When the tumor is limited to this layer, it is called "Non-Muscle invasive" (superficial) urinary bladder
cancer. This superficial type of cancer tends to recur despite surgery and/or treatment;
in most cases, the tumor tends to recur as Non-Muscle invasive cancer.
A tumor that penetrates more deeply into the muscular layer of the urinary
bladder, is called "invasive" urinary bladder cancer
USA & Canada
Europe
Japan
No. of new cases per year
49,500
109,021
10,902
Data taken from an evaluation by the World Health Organization (WHO)
Symptoms of the disease
The symptoms of urinary bladder cancer, which are not necessarily evident, generally include:
Presence of blood in urine (hematuria); the passing of bloody urine is generally painless
Blood traces in urine laboratory tests
Urgency (inability to postpone urination) and frequency (urinating often)
Discomfort during urination
These symptoms may also appear in other non-malignant diseases such as:
urinary tract infection, urinary bladder stones, benign tumors, and others.
Only a physician can interpret these meaning of these symptoms; therefore, the appearance
of any one of these presentations requires medical attention.
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