Cancer spreads even before tumours form
In a new discovery that might challenge the existing knowledge of cancer and methods to treat it, researchers have found cancer cells spread to organs much earlier than was thought.

In fact, cancer cells can spread even before a tumour develops, remain quiet for long periods of time and then awaken to form aggressive and fatal metastasis, show two new studies published recently in Nature, a leading international science journal....

http://health.economictimes.indiatimes.com/news/diagnostics/cancer-spreads-even-before-tumours-form/56433475
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