Cancer of the bladder will usually be discovered after the patient has passed blood in the water, but most people who pass blood in the water will not have this disease. Most bladder cancers are superficial polyp-like growths in the bladder, which are easily treated by endoscopic surgery, but some are more serious, and the initial removal, together with further scans, will give your surgeon all the information needed to determine the best treatment and follow up plan needed in your particular case. In some cases this will mean further treatment in the form of radiotherapy, chemotherapy or surgery to remove the whole bladder, but a high proportion of people with bladder cancer are caught in good time, and simply require regular checks of the bladder to make sure no further disease is present.