Wikimedia has a great writeup on Bladder Cancer which provides a wide variety of information and external links.

Information and resources for people diagnosed with bladder cancer and those who care for them, valuable tips and help for researching treatment options.

Bladder Cancer Advocacy Network (BCAN) is the first national advocacy organization dedicated to improving public awareness of bladder cancer, and increasing bladder cancer research funding. The website provides information about symptoms, diagnosis, and treatment of bladder cancer as well as valuable resources for survivors

Treatment for bladder cancer is more effective the earlier you ask about your symptoms.

Information about bladder cancer, including causes, symptoms, diagnosis, treatments, side effects and further resources.

Primary symptom of bladder cancer is blood in the urine (hematuria). Symptoms, causes, pictures, diagnostic tests, types, staging, and treatment options described. Physician-developed; written for consumers.

Bladder cancer is a disease in which cancer (malignant) cells are found in the bladder. The bladder, a hollow organ...

Bladder Cancer is a cancer that starts in the top of the bladder's lining and then spreads downward into the muscle layer. Then it begins to cause problems.

Bladder Cancer is often suspected where there is a finding of blood in the urine. Although the blood could be a result of kidney, prostate or urinary problems, bladder cancer produces very few signs in the early stages. Other symptoms of bladder cancer might include a frequent urge to urinate, pain when urinating and low back pain. However, blood in the urine is typically the first sign that the cells lining the bladder have gone astray and started forming a mass of cells called a tumor.