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What is the definition and prognosis of bladder cancer, in laymen's terms?

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Quick Answer

Bladder cancer is the growth of abnormal cells in the organ that stores urine in the body, explains WebMD. When these cells grow together, they form a mass called a tumor. The most common type of bladder cancer begins in the cells that line the inside of the bladder.

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Full Answer

Most cases of bladder cancer are diagnosed in the early stage and have a high chance of treatment success, explains WebMD. Early-stage bladder cancer frequently comes back after treatment, and patients are required to receive regular follow-up exams to track for recurrence.

Prognosis of bladder cancer depends on the depth of tumor invasion into the bladder, the grade of the tumor, and the presence of carcinoma in situ, according to the National Cancer Institute. Other prognostic factors include the number of tumors, tumor size, invasion and whether the tumor is primary or a recurrence.

The 5-year survival rate of patients with stage 0 bladder cancer is 98 percent, states the American Cancer Society. This means that 98 out of 100 patients with stage 0 bladder cancer who receive treatment survive for at least 5 years. The 5-year survival rate for stage 1 bladder cancer is 88 percent, 63 percent for stage 2, 46 percent for stage 3 and 15 percent for stage 4.

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