What causes a small, benign polyp to develop into severe invasive bladder cancer?

[unable to retrieve full-text content]Researchers have for the first time identified the mechanism that causes a small, benign polyp to develop into severe invasive bladder cancer.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/~3/nxDZkozmc7U/130801095503.htm

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